| 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 | /* Call this instead of exit(), so we can clean up SDL: atexit() is evil. */ |
| 15 | static void quit(int rc) |
| 16 | { |
| 17 | SDL_Quit(); |
| 18 | exit(rc); |
| 19 | } |
| 20 | |
| 21 | void DrawPict(SDL_Surface *screen, char *bmpfile, |
| 22 | int speedy, int flip, int nofade) |
| 23 | { |
| 24 | SDL_Surface *picture; |
| 25 | SDL_Rect dest, update; |
| 26 | int i, centered; |
| 27 | int ncolors; |
| 28 | SDL_Color *colors, *cmap; |
| 29 | |
| 30 | /* Load the image into a surface */ |
| 31 | if ( bmpfile == NULL ) { |
| 32 | bmpfile = "sample.bmp"; /* Sample image */ |
| 33 | } |
| 34 | fprintf(stderr, "Loading picture: %s\n", bmpfile); |
| 35 | picture = SDL_LoadBMP(bmpfile); |
| 36 | if ( picture == NULL ) { |
| 37 | fprintf(stderr, "Couldn't load %s: %s\n", bmpfile, |
| 38 | SDL_GetError()); |
| 39 | return; |
| 40 | } |
| 41 | |
| 42 | /* Set the display colors -- on a hicolor display this is a no-op */ |
| 43 | if ( picture->format->palette ) { |
| 44 | ncolors = picture->format->palette->ncolors; |
| 45 | colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); |
| 46 | cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); |
| 47 | memcpy(colors, picture->format->palette->colors, |
| 48 | ncolors*sizeof(SDL_Color)); |
| 49 | } else { |
| 50 | int r, g, b; |
| 51 | |
| 52 | /* Allocate 256 color palette */ |
| 53 | ncolors = 256; |
| 54 | colors = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); |
| 55 | cmap = (SDL_Color *)malloc(ncolors*sizeof(SDL_Color)); |
| 56 | |
| 57 | /* Set a 3,3,2 color cube */ |
| 58 | for ( r=0; r<8; ++r ) { |
| 59 | for ( g=0; g<8; ++g ) { |
| 60 | for ( b=0; b<4; ++b ) { |
| 61 | i = ((r<<5)|(g<<2)|b); |
| 62 | colors[i].r = r<<5; |
| 63 | colors[i].g = g<<5; |
| 64 | colors[i].b = b<<6; |
| 65 | } |
| 66 | } |
| 67 | } |
| 68 | } |
| 69 | NOTICE("testwin: setting colors\n"); |
| 70 | if ( ! SDL_SetColors(screen, colors, 0, ncolors) && |
| 71 | (screen->format->palette != NULL) ) { |
| 72 | fprintf(stderr, |
| 73 | "Warning: Couldn't set all of the colors, but SDL will map the image\n" |
| 74 | " (colormap fading will suffer - try the -warp option)\n" |
| 75 | ); |
| 76 | } |
| 77 | |
| 78 | /* Set the screen to black (not really necessary) */ |
| 79 | if ( SDL_LockSurface(screen) == 0 ) { |
| 80 | Uint32 black; |
| 81 | Uint8 *pixels; |
| 82 | |
| 83 | black = SDL_MapRGB(screen->format, 0, 0, 0); |
| 84 | pixels = (Uint8 *)screen->pixels; |
| 85 | for ( i=0; i<screen->h; ++i ) { |
| 86 | memset(pixels, black, |
| 87 | screen->w*screen->format->BytesPerPixel); |
| 88 | pixels += screen->pitch; |
| 89 | } |
| 90 | SDL_UnlockSurface(screen); |
| 91 | SDL_UpdateRect(screen, 0, 0, 0, 0); |
| 92 | } |
| 93 | |
| 94 | /* Display the picture */ |
| 95 | if ( speedy ) { |
| 96 | SDL_Surface *displayfmt; |
| 97 | |
| 98 | fprintf(stderr, "Converting picture\n"); |
| 99 | displayfmt = SDL_DisplayFormat(picture); |
| 100 | if ( displayfmt == NULL ) { |
| 101 | fprintf(stderr, |
| 102 | "Couldn't convert image: %s\n", SDL_GetError()); |
| 103 | goto done; |
| 104 | } |
| 105 | SDL_FreeSurface(picture); |
| 106 | picture = displayfmt; |
| 107 | } |
| 108 | printf("(image surface located in %s memory)\n", |
| 109 | (picture->flags&SDL_HWSURFACE) ? "video" : "system"); |
| 110 | centered = (screen->w - picture->w)/2; |
| 111 | if ( centered < 0 ) { |
| 112 | centered = 0; |
| 113 | } |
| 114 | dest.y = (screen->h - picture->h)/2; |
| 115 | dest.w = picture->w; |
| 116 | dest.h = picture->h; |
| 117 | NOTICE("testwin: moving image\n"); |
| 118 | for ( i=0; i<=centered; ++i ) { |
| 119 | dest.x = i; |
| 120 | update = dest; |
| 121 | if ( SDL_BlitSurface(picture, NULL, screen, &update) < 0 ) { |
| 122 | fprintf(stderr, "Blit failed: %s\n", SDL_GetError()); |
| 123 | break; |
| 124 | } |
| 125 | if ( flip ) { |
| 126 | SDL_Flip(screen); |
| 127 | } else { |
| 128 | SDL_UpdateRects(screen, 1, &update); |
| 129 | } |
| 130 | } |
| 131 | |
| 132 | #ifdef SCREENSHOT |
| 133 | if ( SDL_SaveBMP(screen, "screen.bmp") < 0 ) |
| 134 | printf("Couldn't save screen: %s\n", SDL_GetError()); |
| 135 | #endif |
| 136 | |
| 137 | #ifndef BENCHMARK_SDL |
| 138 | /* Let it sit there for a while */ |
| 139 | SDL_Delay(5*1000); |
| 140 | #endif |
| 141 | /* Fade the colormap */ |
| 142 | if ( ! nofade ) { |
| 143 | int maxstep; |
| 144 | SDL_Color final; |
| 145 | SDL_Color palcolors[256]; |
| 146 | struct { |
| 147 | Sint16 r, g, b; |
| 148 | } cdist[256]; |
| 149 | |
| 150 | NOTICE("testwin: fading out...\n"); |
| 151 | memcpy(cmap, colors, ncolors*sizeof(SDL_Color)); |
| 152 | maxstep = 32-1; |
| 153 | final.r = 0xFF; |
| 154 | final.g = 0x00; |
| 155 | final.b = 0x00; |
| 156 | memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); |
| 157 | for ( i=0; i<ncolors; ++i ) { |
| 158 | cdist[i].r = final.r-palcolors[i].r; |
| 159 | cdist[i].g = final.g-palcolors[i].g; |
| 160 | cdist[i].b = final.b-palcolors[i].b; |
| 161 | } |
| 162 | for ( i=0; i<=maxstep/2; ++i ) { /* halfway fade */ |
| 163 | int c; |
| 164 | for ( c=0; c<ncolors; ++c ) { |
| 165 | colors[c].r = |
| 166 | palcolors[c].r+((cdist[c].r*i))/maxstep; |
| 167 | colors[c].g = |
| 168 | palcolors[c].g+((cdist[c].g*i))/maxstep; |
| 169 | colors[c].b = |
| 170 | palcolors[c].b+((cdist[c].b*i))/maxstep; |
| 171 | } |
| 172 | SDL_SetColors(screen, colors, 0, ncolors); |
| 173 | SDL_Delay(1); |
| 174 | } |
| 175 | final.r = 0x00; |
| 176 | final.g = 0x00; |
| 177 | final.b = 0x00; |
| 178 | memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); |
| 179 | for ( i=0; i<ncolors; ++i ) { |
| 180 | cdist[i].r = final.r-palcolors[i].r; |
| 181 | cdist[i].g = final.g-palcolors[i].g; |
| 182 | cdist[i].b = final.b-palcolors[i].b; |
| 183 | } |
| 184 | maxstep /= 2; |
| 185 | for ( i=0; i<=maxstep; ++i ) { /* finish fade out */ |
| 186 | int c; |
| 187 | for ( c=0; c<ncolors; ++c ) { |
| 188 | colors[c].r = |
| 189 | palcolors[c].r+((cdist[c].r*i))/maxstep; |
| 190 | colors[c].g = |
| 191 | palcolors[c].g+((cdist[c].g*i))/maxstep; |
| 192 | colors[c].b = |
| 193 | palcolors[c].b+((cdist[c].b*i))/maxstep; |
| 194 | } |
| 195 | SDL_SetColors(screen, colors, 0, ncolors); |
| 196 | SDL_Delay(1); |
| 197 | } |
| 198 | for ( i=0; i<ncolors; ++i ) { |
| 199 | colors[i].r = final.r; |
| 200 | colors[i].g = final.g; |
| 201 | colors[i].b = final.b; |
| 202 | } |
| 203 | SDL_SetColors(screen, colors, 0, ncolors); |
| 204 | NOTICE("testwin: fading in...\n"); |
| 205 | memcpy(palcolors, colors, ncolors*sizeof(SDL_Color)); |
| 206 | for ( i=0; i<ncolors; ++i ) { |
| 207 | cdist[i].r = cmap[i].r-palcolors[i].r; |
| 208 | cdist[i].g = cmap[i].g-palcolors[i].g; |
| 209 | cdist[i].b = cmap[i].b-palcolors[i].b; |
| 210 | } |
| 211 | for ( i=0; i<=maxstep; ++i ) { /* 32 step fade in */ |
| 212 | int c; |
| 213 | for ( c=0; c<ncolors; ++c ) { |
| 214 | colors[c].r = |
| 215 | palcolors[c].r+((cdist[c].r*i))/maxstep; |
| 216 | colors[c].g = |
| 217 | palcolors[c].g+((cdist[c].g*i))/maxstep; |
| 218 | colors[c].b = |
| 219 | palcolors[c].b+((cdist[c].b*i))/maxstep; |
| 220 | } |
| 221 | SDL_SetColors(screen, colors, 0, ncolors); |
| 222 | SDL_Delay(1); |
| 223 | } |
| 224 | NOTICE("testwin: fading over\n"); |
| 225 | } |
| 226 | |
| 227 | done: |
| 228 | /* Free the picture and return */ |
| 229 | SDL_FreeSurface(picture); |
| 230 | free(colors); free(cmap); |
| 231 | return; |
| 232 | } |
| 233 | |
| 234 | int main(int argc, char *argv[]) |
| 235 | { |
| 236 | SDL_Surface *screen; |
| 237 | /* Options */ |
| 238 | int speedy, flip, nofade; |
| 239 | int delay; |
| 240 | int w, h; |
| 241 | int desired_bpp; |
| 242 | Uint32 video_flags; |
| 243 | #ifdef BENCHMARK_SDL |
| 244 | Uint32 then, now; |
| 245 | #endif |
| 246 | /* Set default options and check command-line */ |
| 247 | speedy = 0; |
| 248 | flip = 0; |
| 249 | nofade = 0; |
| 250 | delay = 1; |
| 251 | |
| 252 | #ifdef _WIN32_WCE |
| 253 | w = 240; |
| 254 | h = 320; |
| 255 | desired_bpp = 8; |
| 256 | video_flags = SDL_FULLSCREEN; |
| 257 | #else |
| 258 | w = 640; |
| 259 | h = 480; |
| 260 | desired_bpp = 0; |
| 261 | video_flags = 0; |
| 262 | #endif |
| 263 | if ( SDL_Init(SDL_INIT_VIDEO) < 0 ) { |
| 264 | fprintf(stderr, |
| 265 | "Couldn't initialize SDL: %s\n", SDL_GetError()); |
| 266 | return(1); |
| 267 | } |
| 268 | |
| 269 | while ( argc > 1 ) { |
| 270 | if ( strcmp(argv[1], "-speedy") == 0 ) { |
| 271 | speedy = 1; |
| 272 | argv += 1; |
| 273 | argc -= 1; |
| 274 | } else |
| 275 | if ( strcmp(argv[1], "-nofade") == 0 ) { |
| 276 | nofade = 1; |
| 277 | argv += 1; |
| 278 | argc -= 1; |
| 279 | } else |
| 280 | if ( strcmp(argv[1], "-delay") == 0 ) { |
| 281 | if ( argv[2] ) { |
| 282 | delay = atoi(argv[2]); |
| 283 | argv += 2; |
| 284 | argc -= 2; |
| 285 | } else { |
| 286 | fprintf(stderr, |
| 287 | "The -delay option requires an argument\n"); |
| 288 | quit(1); |
| 289 | } |
| 290 | } else |
| 291 | if ( strcmp(argv[1], "-width") == 0 ) { |
| 292 | if ( argv[2] && ((w = atoi(argv[2])) > 0) ) { |
| 293 | argv += 2; |
| 294 | argc -= 2; |
| 295 | } else { |
| 296 | fprintf(stderr, |
| 297 | "The -width option requires an argument\n"); |
| 298 | quit(1); |
| 299 | } |
| 300 | } else |
| 301 | if ( strcmp(argv[1], "-height") == 0 ) { |
| 302 | if ( argv[2] && ((h = atoi(argv[2])) > 0) ) { |
| 303 | argv += 2; |
| 304 | argc -= 2; |
| 305 | } else { |
| 306 | fprintf(stderr, |
| 307 | "The -height option requires an argument\n"); |
| 308 | quit(1); |
| 309 | } |
| 310 | } else |
| 311 | if ( strcmp(argv[1], "-bpp") == 0 ) { |
| 312 | if ( argv[2] ) { |
| 313 | desired_bpp = atoi(argv[2]); |
| 314 | argv += 2; |
| 315 | argc -= 2; |
| 316 | } else { |
| 317 | fprintf(stderr, |
| 318 | "The -bpp option requires an argument\n"); |
| 319 | quit(1); |
| 320 | } |
| 321 | } else |
| 322 | if ( strcmp(argv[1], "-warp") == 0 ) { |
| 323 | video_flags |= SDL_HWPALETTE; |
| 324 | argv += 1; |
| 325 | argc -= 1; |
| 326 | } else |
| 327 | if ( strcmp(argv[1], "-hw") == 0 ) { |
| 328 | video_flags |= SDL_HWSURFACE; |
| 329 | argv += 1; |
| 330 | argc -= 1; |
| 331 | } else |
| 332 | if ( strcmp(argv[1], "-flip") == 0 ) { |
| 333 | video_flags |= SDL_DOUBLEBUF; |
| 334 | argv += 1; |
| 335 | argc -= 1; |
| 336 | } else |
| 337 | if ( strcmp(argv[1], "-fullscreen") == 0 ) { |
| 338 | video_flags |= SDL_FULLSCREEN; |
| 339 | argv += 1; |
| 340 | argc -= 1; |
| 341 | } else |
| 342 | break; |
| 343 | } |
| 344 | |
| 345 | /* Initialize the display */ |
| 346 | screen = SDL_SetVideoMode(w, h, desired_bpp, video_flags); |
| 347 | if ( screen == NULL ) { |
| 348 | fprintf(stderr, "Couldn't set %dx%dx%d video mode: %s\n", |
| 349 | w, h, desired_bpp, SDL_GetError()); |
| 350 | quit(1); |
| 351 | } |
| 352 | printf("Set%s %dx%dx%d mode\n", |
| 353 | screen->flags & SDL_FULLSCREEN ? " fullscreen" : "", |
| 354 | screen->w, screen->h, screen->format->BitsPerPixel); |
| 355 | printf("(video surface located in %s memory)\n", |
| 356 | (screen->flags&SDL_HWSURFACE) ? "video" : "system"); |
| 357 | if ( screen->flags & SDL_DOUBLEBUF ) { |
| 358 | printf("Double-buffering enabled\n"); |
| 359 | flip = 1; |
| 360 | } |
| 361 | |
| 362 | /* Set the window manager title bar */ |
| 363 | SDL_WM_SetCaption("SDL test window", "testwin"); |
| 364 | |
| 365 | /* Do all the drawing work */ |
| 366 | #ifdef BENCHMARK_SDL |
| 367 | then = SDL_GetTicks(); |
| 368 | DrawPict(screen, argv[1], speedy, flip, nofade); |
| 369 | now = SDL_GetTicks(); |
| 370 | printf("Time: %d milliseconds\n", now-then); |
| 371 | #else |
| 372 | DrawPict(screen, argv[1], speedy, flip, nofade); |
| 373 | #endif |
| 374 | SDL_Delay(delay*1000); |
| 375 | SDL_Quit(); |
| 376 | return(0); |
| 377 | } |