Mercurial > sdl-ios-xcode
annotate src/video/SDL_bmp.c @ 1378:dc0e13e7e1ae
*** empty log message ***
| author | Sam Lantinga <slouken@libsdl.org> |
|---|---|
| date | Sun, 19 Feb 2006 23:38:57 +0000 |
| parents | 19418e4422cb |
| children | d910939febfa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 2 SDL - Simple DirectMedia Layer | |
|
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3 Copyright (C) 1997-2006 Sam Lantinga |
| 0 | 4 |
| 5 This library is free software; you can redistribute it and/or | |
|
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|
6 modify it under the terms of the GNU Lesser General Public |
| 0 | 7 License as published by the Free Software Foundation; either |
|
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8 version 2.1 of the License, or (at your option) any later version. |
| 0 | 9 |
| 10 This library is distributed in the hope that it will be useful, | |
| 11 but WITHOUT ANY WARRANTY; without even the implied warranty of | |
| 12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
|
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13 Lesser General Public License for more details. |
| 0 | 14 |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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15 You should have received a copy of the GNU Lesser General Public |
|
c9b51268668f
Updated copyright information and removed rcs id lines (problematic in branch merges)
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
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16 License along with this library; if not, write to the Free Software |
|
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17 Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA |
| 0 | 18 |
| 19 Sam Lantinga | |
|
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20 slouken@libsdl.org |
| 0 | 21 */ |
| 22 | |
| 23 /* | |
| 24 Code to load and save surfaces in Windows BMP format. | |
| 25 | |
| 26 Why support BMP format? Well, it's a native format for Windows, and | |
| 27 most image processing programs can read and write it. It would be nice | |
| 28 to be able to have at least one image format that we can natively load | |
| 29 and save, and since PNG is so complex that it would bloat the library, | |
| 30 BMP is a good alternative. | |
| 31 | |
| 32 This code currently supports Win32 DIBs in uncompressed 8 and 24 bpp. | |
| 33 */ | |
| 34 | |
| 35 #include "SDL_video.h" | |
| 36 #include "SDL_endian.h" | |
| 37 | |
| 38 /* Compression encodings for BMP files */ | |
| 39 #ifndef BI_RGB | |
| 40 #define BI_RGB 0 | |
| 41 #define BI_RLE8 1 | |
| 42 #define BI_RLE4 2 | |
| 43 #define BI_BITFIELDS 3 | |
| 44 #endif | |
| 45 | |
| 46 | |
| 47 SDL_Surface * SDL_LoadBMP_RW (SDL_RWops *src, int freesrc) | |
| 48 { | |
| 49 int was_error; | |
| 50 long fp_offset; | |
| 51 int bmpPitch; | |
| 52 int i, pad; | |
| 53 SDL_Surface *surface; | |
| 54 Uint32 Rmask; | |
| 55 Uint32 Gmask; | |
| 56 Uint32 Bmask; | |
| 57 SDL_Palette *palette; | |
| 58 Uint8 *bits; | |
| 59 int ExpandBMP; | |
| 60 | |
| 61 /* The Win32 BMP file header (14 bytes) */ | |
| 62 char magic[2]; | |
| 63 Uint32 bfSize; | |
| 64 Uint16 bfReserved1; | |
| 65 Uint16 bfReserved2; | |
| 66 Uint32 bfOffBits; | |
| 67 | |
| 68 /* The Win32 BITMAPINFOHEADER struct (40 bytes) */ | |
| 69 Uint32 biSize; | |
| 70 Sint32 biWidth; | |
| 71 Sint32 biHeight; | |
| 72 Uint16 biPlanes; | |
| 73 Uint16 biBitCount; | |
| 74 Uint32 biCompression; | |
| 75 Uint32 biSizeImage; | |
| 76 Sint32 biXPelsPerMeter; | |
| 77 Sint32 biYPelsPerMeter; | |
| 78 Uint32 biClrUsed; | |
| 79 Uint32 biClrImportant; | |
| 80 | |
| 81 /* Make sure we are passed a valid data source */ | |
| 82 surface = NULL; | |
| 83 was_error = 0; | |
| 84 if ( src == NULL ) { | |
| 85 was_error = 1; | |
| 86 goto done; | |
| 87 } | |
| 88 | |
| 89 /* Read in the BMP file header */ | |
| 90 fp_offset = SDL_RWtell(src); | |
| 91 SDL_ClearError(); | |
| 92 if ( SDL_RWread(src, magic, 1, 2) != 2 ) { | |
| 93 SDL_Error(SDL_EFREAD); | |
| 94 was_error = 1; | |
| 95 goto done; | |
| 96 } | |
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97 if ( SDL_strncmp(magic, "BM", 2) != 0 ) { |
| 0 | 98 SDL_SetError("File is not a Windows BMP file"); |
| 99 was_error = 1; | |
| 100 goto done; | |
| 101 } | |
| 102 bfSize = SDL_ReadLE32(src); | |
| 103 bfReserved1 = SDL_ReadLE16(src); | |
| 104 bfReserved2 = SDL_ReadLE16(src); | |
| 105 bfOffBits = SDL_ReadLE32(src); | |
| 106 | |
| 107 /* Read the Win32 BITMAPINFOHEADER */ | |
| 108 biSize = SDL_ReadLE32(src); | |
| 109 if ( biSize == 12 ) { | |
| 110 biWidth = (Uint32)SDL_ReadLE16(src); | |
| 111 biHeight = (Uint32)SDL_ReadLE16(src); | |
| 112 biPlanes = SDL_ReadLE16(src); | |
| 113 biBitCount = SDL_ReadLE16(src); | |
| 114 biCompression = BI_RGB; | |
| 115 biSizeImage = 0; | |
| 116 biXPelsPerMeter = 0; | |
| 117 biYPelsPerMeter = 0; | |
| 118 biClrUsed = 0; | |
| 119 biClrImportant = 0; | |
| 120 } else { | |
| 121 biWidth = SDL_ReadLE32(src); | |
| 122 biHeight = SDL_ReadLE32(src); | |
| 123 biPlanes = SDL_ReadLE16(src); | |
| 124 biBitCount = SDL_ReadLE16(src); | |
| 125 biCompression = SDL_ReadLE32(src); | |
| 126 biSizeImage = SDL_ReadLE32(src); | |
| 127 biXPelsPerMeter = SDL_ReadLE32(src); | |
| 128 biYPelsPerMeter = SDL_ReadLE32(src); | |
| 129 biClrUsed = SDL_ReadLE32(src); | |
| 130 biClrImportant = SDL_ReadLE32(src); | |
| 131 } | |
| 132 | |
| 133 /* Check for read error */ | |
|
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134 if ( SDL_strcmp(SDL_GetError(), "") != 0 ) { |
| 0 | 135 was_error = 1; |
| 136 goto done; | |
| 137 } | |
| 138 | |
| 139 /* Expand 1 and 4 bit bitmaps to 8 bits per pixel */ | |
| 140 switch (biBitCount) { | |
| 141 case 1: | |
| 142 case 4: | |
| 143 ExpandBMP = biBitCount; | |
| 144 biBitCount = 8; | |
| 145 break; | |
| 146 default: | |
| 147 ExpandBMP = 0; | |
| 148 break; | |
| 149 } | |
| 150 | |
| 151 /* We don't support any BMP compression right now */ | |
| 152 Rmask = Gmask = Bmask = 0; | |
| 153 switch (biCompression) { | |
| 154 case BI_RGB: | |
| 155 /* If there are no masks, use the defaults */ | |
| 156 if ( bfOffBits == (14+biSize) ) { | |
| 157 /* Default values for the BMP format */ | |
| 158 switch (biBitCount) { | |
| 159 case 15: | |
| 160 case 16: | |
| 161 Rmask = 0x7C00; | |
| 162 Gmask = 0x03E0; | |
| 163 Bmask = 0x001F; | |
| 164 break; | |
| 165 case 24: | |
| 166 #if SDL_BYTEORDER == SDL_BIG_ENDIAN | |
| 167 Rmask = 0x000000FF; | |
| 168 Gmask = 0x0000FF00; | |
| 169 Bmask = 0x00FF0000; | |
| 170 break; | |
| 171 #endif | |
| 172 case 32: | |
| 173 Rmask = 0x00FF0000; | |
| 174 Gmask = 0x0000FF00; | |
| 175 Bmask = 0x000000FF; | |
| 176 break; | |
| 177 default: | |
| 178 break; | |
| 179 } | |
| 180 break; | |
| 181 } | |
| 182 /* Fall through -- read the RGB masks */ | |
| 183 | |
| 184 case BI_BITFIELDS: | |
| 185 switch (biBitCount) { | |
| 186 case 15: | |
| 187 case 16: | |
| 188 case 32: | |
| 189 Rmask = SDL_ReadLE32(src); | |
| 190 Gmask = SDL_ReadLE32(src); | |
| 191 Bmask = SDL_ReadLE32(src); | |
| 192 break; | |
| 193 default: | |
| 194 break; | |
| 195 } | |
| 196 break; | |
| 197 default: | |
| 198 SDL_SetError("Compressed BMP files not supported"); | |
| 199 was_error = 1; | |
| 200 goto done; | |
| 201 } | |
| 202 | |
| 203 /* Create a compatible surface, note that the colors are RGB ordered */ | |
| 204 surface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 205 biWidth, biHeight, biBitCount, Rmask, Gmask, Bmask, 0); | |
| 206 if ( surface == NULL ) { | |
| 207 was_error = 1; | |
| 208 goto done; | |
| 209 } | |
| 210 | |
| 211 /* Load the palette, if any */ | |
| 212 palette = (surface->format)->palette; | |
| 213 if ( palette ) { | |
| 214 if ( biClrUsed == 0 ) { | |
| 215 biClrUsed = 1 << biBitCount; | |
| 216 } | |
| 217 if ( biSize == 12 ) { | |
| 218 for ( i = 0; i < (int)biClrUsed; ++i ) { | |
| 219 SDL_RWread(src, &palette->colors[i].b, 1, 1); | |
| 220 SDL_RWread(src, &palette->colors[i].g, 1, 1); | |
| 221 SDL_RWread(src, &palette->colors[i].r, 1, 1); | |
| 222 palette->colors[i].unused = 0; | |
| 223 } | |
| 224 } else { | |
| 225 for ( i = 0; i < (int)biClrUsed; ++i ) { | |
| 226 SDL_RWread(src, &palette->colors[i].b, 1, 1); | |
| 227 SDL_RWread(src, &palette->colors[i].g, 1, 1); | |
| 228 SDL_RWread(src, &palette->colors[i].r, 1, 1); | |
| 229 SDL_RWread(src, &palette->colors[i].unused, 1, 1); | |
| 230 } | |
| 231 } | |
| 232 palette->ncolors = biClrUsed; | |
| 233 } | |
| 234 | |
| 235 /* Read the surface pixels. Note that the bmp image is upside down */ | |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1329
diff
changeset
|
236 if ( SDL_RWseek(src, fp_offset+bfOffBits, RW_SEEK_SET) < 0 ) { |
| 0 | 237 SDL_Error(SDL_EFSEEK); |
| 238 was_error = 1; | |
| 239 goto done; | |
| 240 } | |
| 241 bits = (Uint8 *)surface->pixels+(surface->h*surface->pitch); | |
| 242 switch (ExpandBMP) { | |
| 243 case 1: | |
| 244 bmpPitch = (biWidth + 7) >> 3; | |
| 245 pad = (((bmpPitch)%4) ? (4-((bmpPitch)%4)) : 0); | |
| 246 break; | |
| 247 case 4: | |
| 248 bmpPitch = (biWidth + 1) >> 1; | |
| 249 pad = (((bmpPitch)%4) ? (4-((bmpPitch)%4)) : 0); | |
| 250 break; | |
| 251 default: | |
| 252 pad = ((surface->pitch%4) ? | |
| 253 (4-(surface->pitch%4)) : 0); | |
| 254 break; | |
| 255 } | |
| 256 while ( bits > (Uint8 *)surface->pixels ) { | |
| 257 bits -= surface->pitch; | |
| 258 switch (ExpandBMP) { | |
| 259 case 1: | |
| 260 case 4: { | |
| 261 Uint8 pixel = 0; | |
| 262 int shift = (8-ExpandBMP); | |
| 263 for ( i=0; i<surface->w; ++i ) { | |
| 264 if ( i%(8/ExpandBMP) == 0 ) { | |
| 265 if ( !SDL_RWread(src, &pixel, 1, 1) ) { | |
| 266 SDL_SetError( | |
| 267 "Error reading from BMP"); | |
| 268 was_error = 1; | |
| 269 goto done; | |
| 270 } | |
| 271 } | |
| 272 *(bits+i) = (pixel>>shift); | |
| 273 pixel <<= ExpandBMP; | |
| 274 } } | |
| 275 break; | |
| 276 | |
| 277 default: | |
| 278 if ( SDL_RWread(src, bits, 1, surface->pitch) | |
| 279 != surface->pitch ) { | |
| 280 SDL_Error(SDL_EFREAD); | |
| 281 was_error = 1; | |
| 282 goto done; | |
| 283 } | |
| 284 #if SDL_BYTEORDER == SDL_BIG_ENDIAN | |
| 285 /* Byte-swap the pixels if needed. Note that the 24bpp | |
| 286 case has already been taken care of above. */ | |
| 287 switch(biBitCount) { | |
| 288 case 15: | |
| 289 case 16: { | |
| 290 Uint16 *pix = (Uint16 *)bits; | |
| 291 for(i = 0; i < surface->w; i++) | |
| 292 pix[i] = SDL_Swap16(pix[i]); | |
| 293 break; | |
| 294 } | |
| 295 | |
| 296 case 32: { | |
| 297 Uint32 *pix = (Uint32 *)bits; | |
| 298 for(i = 0; i < surface->w; i++) | |
| 299 pix[i] = SDL_Swap32(pix[i]); | |
| 300 break; | |
| 301 } | |
| 302 } | |
| 303 #endif | |
| 304 break; | |
| 305 } | |
| 306 /* Skip padding bytes, ugh */ | |
| 307 if ( pad ) { | |
| 308 Uint8 padbyte; | |
| 309 for ( i=0; i<pad; ++i ) { | |
| 310 SDL_RWread(src, &padbyte, 1, 1); | |
| 311 } | |
| 312 } | |
| 313 } | |
| 314 done: | |
| 315 if ( was_error ) { | |
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316 if ( src ) { |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
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diff
changeset
|
317 SDL_RWseek(src, fp_offset, RW_SEEK_SET); |
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|
318 } |
| 0 | 319 if ( surface ) { |
| 320 SDL_FreeSurface(surface); | |
| 321 } | |
| 322 surface = NULL; | |
| 323 } | |
| 324 if ( freesrc && src ) { | |
| 325 SDL_RWclose(src); | |
| 326 } | |
| 327 return(surface); | |
| 328 } | |
| 329 | |
| 330 int SDL_SaveBMP_RW (SDL_Surface *saveme, SDL_RWops *dst, int freedst) | |
| 331 { | |
| 332 long fp_offset; | |
| 333 int i, pad; | |
| 334 SDL_Surface *surface; | |
| 335 Uint8 *bits; | |
| 336 | |
| 337 /* The Win32 BMP file header (14 bytes) */ | |
| 338 char magic[2] = { 'B', 'M' }; | |
| 339 Uint32 bfSize; | |
| 340 Uint16 bfReserved1; | |
| 341 Uint16 bfReserved2; | |
| 342 Uint32 bfOffBits; | |
| 343 | |
| 344 /* The Win32 BITMAPINFOHEADER struct (40 bytes) */ | |
| 345 Uint32 biSize; | |
| 346 Sint32 biWidth; | |
| 347 Sint32 biHeight; | |
| 348 Uint16 biPlanes; | |
| 349 Uint16 biBitCount; | |
| 350 Uint32 biCompression; | |
| 351 Uint32 biSizeImage; | |
| 352 Sint32 biXPelsPerMeter; | |
| 353 Sint32 biYPelsPerMeter; | |
| 354 Uint32 biClrUsed; | |
| 355 Uint32 biClrImportant; | |
| 356 | |
| 357 /* Make sure we have somewhere to save */ | |
| 358 surface = NULL; | |
| 359 if ( dst ) { | |
| 360 if ( saveme->format->palette ) { | |
| 361 if ( saveme->format->BitsPerPixel == 8 ) { | |
| 362 surface = saveme; | |
| 363 } else { | |
| 364 SDL_SetError("%d bpp BMP files not supported", | |
| 365 saveme->format->BitsPerPixel); | |
| 366 } | |
| 367 } | |
| 368 else if ( (saveme->format->BitsPerPixel == 24) && | |
| 369 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 370 (saveme->format->Rmask == 0x00FF0000) && | |
| 371 (saveme->format->Gmask == 0x0000FF00) && | |
| 372 (saveme->format->Bmask == 0x000000FF) | |
| 373 #else | |
| 374 (saveme->format->Rmask == 0x000000FF) && | |
| 375 (saveme->format->Gmask == 0x0000FF00) && | |
| 376 (saveme->format->Bmask == 0x00FF0000) | |
| 377 #endif | |
| 378 ) { | |
| 379 surface = saveme; | |
| 380 } else { | |
| 381 SDL_Rect bounds; | |
| 382 | |
| 383 /* Convert to 24 bits per pixel */ | |
| 384 surface = SDL_CreateRGBSurface(SDL_SWSURFACE, | |
| 385 saveme->w, saveme->h, 24, | |
| 386 #if SDL_BYTEORDER == SDL_LIL_ENDIAN | |
| 387 0x00FF0000, 0x0000FF00, 0x000000FF, | |
| 388 #else | |
| 389 0x000000FF, 0x0000FF00, 0x00FF0000, | |
| 390 #endif | |
| 391 0); | |
| 392 if ( surface != NULL ) { | |
| 393 bounds.x = 0; | |
| 394 bounds.y = 0; | |
| 395 bounds.w = saveme->w; | |
| 396 bounds.h = saveme->h; | |
| 397 if ( SDL_LowerBlit(saveme, &bounds, surface, | |
| 398 &bounds) < 0 ) { | |
| 399 SDL_FreeSurface(surface); | |
| 400 SDL_SetError( | |
| 401 "Couldn't convert image to 24 bpp"); | |
| 402 surface = NULL; | |
| 403 } | |
| 404 } | |
| 405 } | |
| 406 } | |
| 407 | |
| 408 if ( surface && (SDL_LockSurface(surface) == 0) ) { | |
|
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f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
409 const int bw = surface->w*surface->format->BytesPerPixel; |
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f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
410 |
| 0 | 411 /* Set the BMP file header values */ |
| 412 bfSize = 0; /* We'll write this when we're done */ | |
| 413 bfReserved1 = 0; | |
| 414 bfReserved2 = 0; | |
| 415 bfOffBits = 0; /* We'll write this when we're done */ | |
| 416 | |
| 417 /* Write the BMP file header values */ | |
| 418 fp_offset = SDL_RWtell(dst); | |
| 419 SDL_ClearError(); | |
| 420 SDL_RWwrite(dst, magic, 2, 1); | |
| 421 SDL_WriteLE32(dst, bfSize); | |
| 422 SDL_WriteLE16(dst, bfReserved1); | |
| 423 SDL_WriteLE16(dst, bfReserved2); | |
| 424 SDL_WriteLE32(dst, bfOffBits); | |
| 425 | |
| 426 /* Set the BMP info values */ | |
| 427 biSize = 40; | |
| 428 biWidth = surface->w; | |
| 429 biHeight = surface->h; | |
| 430 biPlanes = 1; | |
| 431 biBitCount = surface->format->BitsPerPixel; | |
| 432 biCompression = BI_RGB; | |
| 433 biSizeImage = surface->h*surface->pitch; | |
| 434 biXPelsPerMeter = 0; | |
| 435 biYPelsPerMeter = 0; | |
| 436 if ( surface->format->palette ) { | |
| 437 biClrUsed = surface->format->palette->ncolors; | |
| 438 } else { | |
| 439 biClrUsed = 0; | |
| 440 } | |
| 441 biClrImportant = 0; | |
| 442 | |
| 443 /* Write the BMP info values */ | |
| 444 SDL_WriteLE32(dst, biSize); | |
| 445 SDL_WriteLE32(dst, biWidth); | |
| 446 SDL_WriteLE32(dst, biHeight); | |
| 447 SDL_WriteLE16(dst, biPlanes); | |
| 448 SDL_WriteLE16(dst, biBitCount); | |
| 449 SDL_WriteLE32(dst, biCompression); | |
| 450 SDL_WriteLE32(dst, biSizeImage); | |
| 451 SDL_WriteLE32(dst, biXPelsPerMeter); | |
| 452 SDL_WriteLE32(dst, biYPelsPerMeter); | |
| 453 SDL_WriteLE32(dst, biClrUsed); | |
| 454 SDL_WriteLE32(dst, biClrImportant); | |
| 455 | |
| 456 /* Write the palette (in BGR color order) */ | |
| 457 if ( surface->format->palette ) { | |
| 458 SDL_Color *colors; | |
| 459 int ncolors; | |
| 460 | |
| 461 colors = surface->format->palette->colors; | |
| 462 ncolors = surface->format->palette->ncolors; | |
| 463 for ( i=0; i<ncolors; ++i ) { | |
| 464 SDL_RWwrite(dst, &colors[i].b, 1, 1); | |
| 465 SDL_RWwrite(dst, &colors[i].g, 1, 1); | |
| 466 SDL_RWwrite(dst, &colors[i].r, 1, 1); | |
| 467 SDL_RWwrite(dst, &colors[i].unused, 1, 1); | |
| 468 } | |
| 469 } | |
| 470 | |
| 471 /* Write the bitmap offset */ | |
| 472 bfOffBits = SDL_RWtell(dst)-fp_offset; | |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1329
diff
changeset
|
473 if ( SDL_RWseek(dst, fp_offset+10, RW_SEEK_SET) < 0 ) { |
| 0 | 474 SDL_Error(SDL_EFSEEK); |
| 475 } | |
| 476 SDL_WriteLE32(dst, bfOffBits); | |
|
1330
450721ad5436
It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1329
diff
changeset
|
477 if ( SDL_RWseek(dst, fp_offset+bfOffBits, RW_SEEK_SET) < 0 ) { |
| 0 | 478 SDL_Error(SDL_EFSEEK); |
| 479 } | |
| 480 | |
| 481 /* Write the bitmap image upside down */ | |
| 482 bits = (Uint8 *)surface->pixels+(surface->h*surface->pitch); | |
|
1012
f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
483 pad = ((bw%4) ? (4-(bw%4)) : 0); |
| 0 | 484 while ( bits > (Uint8 *)surface->pixels ) { |
| 485 bits -= surface->pitch; | |
|
1012
f14e3059e138
Date: Mon, 13 Dec 2004 21:28:18 -0500
Sam Lantinga <slouken@libsdl.org>
parents:
769
diff
changeset
|
486 if ( SDL_RWwrite(dst, bits, 1, bw) != bw) { |
| 0 | 487 SDL_Error(SDL_EFWRITE); |
| 488 break; | |
| 489 } | |
| 490 if ( pad ) { | |
| 491 const Uint8 padbyte = 0; | |
| 492 for ( i=0; i<pad; ++i ) { | |
| 493 SDL_RWwrite(dst, &padbyte, 1, 1); | |
| 494 } | |
| 495 } | |
| 496 } | |
| 497 | |
| 498 /* Write the BMP file size */ | |
| 499 bfSize = SDL_RWtell(dst)-fp_offset; | |
|
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Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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500 if ( SDL_RWseek(dst, fp_offset+2, RW_SEEK_SET) < 0 ) { |
| 0 | 501 SDL_Error(SDL_EFSEEK); |
| 502 } | |
| 503 SDL_WriteLE32(dst, bfSize); | |
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It's now possible to build SDL without any C runtime at all on Windows,
Sam Lantinga <slouken@libsdl.org>
parents:
1329
diff
changeset
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504 if ( SDL_RWseek(dst, fp_offset+bfSize, RW_SEEK_SET) < 0 ) { |
| 0 | 505 SDL_Error(SDL_EFSEEK); |
| 506 } | |
| 507 | |
| 508 /* Close it up.. */ | |
| 509 SDL_UnlockSurface(surface); | |
| 510 if ( surface != saveme ) { | |
| 511 SDL_FreeSurface(surface); | |
| 512 } | |
| 513 } | |
| 514 | |
| 515 if ( freedst && dst ) { | |
| 516 SDL_RWclose(dst); | |
| 517 } | |
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Sam Lantinga <slouken@libsdl.org>
parents:
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changeset
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518 return((SDL_strcmp(SDL_GetError(), "") == 0) ? 0 : -1); |
| 0 | 519 } |