Mercurial > hg > dmlib
annotate libgfx.c @ 453:349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Sun, 04 Nov 2012 12:07:59 +0200 |
| parents | d1f7ddc84c7c |
| children | 0af039b6c0ae |
| rev | line source |
|---|---|
| 435 | 1 /* |
| 2 * Functions for reading and converting various restricted | |
| 3 * C64/etc and/or indexed/paletted graphics formats. | |
| 4 * Programmed and designed by Matti 'ccr' Hamalainen | |
| 5 * (C) Copyright 2012 Tecnic Software productions (TNSP) | |
| 6 * | |
| 7 * Please read file 'COPYING' for information on license and distribution. | |
| 8 */ | |
| 9 #include "libgfx.h" | |
| 10 #include "dmfile.h" | |
| 11 #include "dmbstr.h" | |
| 12 | |
| 13 #ifdef DM_USE_LIBPNG | |
| 14 #include <png.h> | |
| 15 #endif | |
| 16 | |
| 17 | |
| 18 DMImage * dmImageAlloc(int width, int height) | |
| 19 { | |
| 20 DMImage *img = dmCalloc(1, sizeof(DMImage)); | |
| 21 if (img == NULL) | |
| 22 return NULL; | |
| 23 | |
| 24 img->width = img->pitch = width; | |
| 25 img->height = height; | |
| 26 img->data = dmMalloc(width * height * sizeof(Uint8)); | |
| 27 if (img->data == NULL) | |
| 28 { | |
| 29 dmFree(img); | |
| 30 return NULL; | |
| 31 } | |
| 32 | |
| 33 return img; | |
| 34 } | |
| 35 | |
| 36 | |
| 37 void dmImageFree(DMImage *img) | |
| 38 { | |
| 39 if (img != NULL) | |
| 40 { | |
| 41 if (!img->constpal) | |
| 42 { | |
| 43 dmFree(img->pal); | |
| 44 } | |
| 45 dmFree(img->data); | |
| 46 dmFree(img); | |
| 47 } | |
| 48 } | |
| 49 | |
| 50 | |
|
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51 BOOL dmPaletteAlloc(DMColor **ppal, int ncolors) |
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52 { |
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53 if (ppal == NULL) |
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54 return FALSE; |
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55 |
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56 return (*ppal = dmCalloc(ncolors, sizeof(DMColor))) != NULL; |
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57 } |
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58 |
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59 |
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60 BOOL dmImageAllocPalette(DMImage *img, int ncolors) |
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61 { |
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62 if (img == NULL) |
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63 return FALSE; |
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64 |
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65 img->ncolors = ncolors; |
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66 return dmPaletteAlloc(&(img->pal), ncolors); |
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67 } |
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68 |
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69 |
| 435 | 70 int dmImageGetBytesPerPixel(int format) |
| 71 { | |
| 72 switch (format) | |
| 73 { | |
| 74 case DM_IFMT_PALETTE : return 1; | |
| 75 | |
| 76 case DM_IFMT_RGB_PLANE : | |
| 77 case DM_IFMT_RGB : return 3; | |
| 78 | |
| 79 case DM_IFMT_RGBA : return 4; | |
| 80 | |
| 81 default: return 0; | |
| 82 } | |
| 83 } | |
| 84 | |
| 85 | |
|
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86 static BOOL dmReadPaletteData(FILE *fp, DMColor *pal, int ncolors) |
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87 { |
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88 int i; |
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89 |
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90 for (i = 0; i < ncolors; i++) |
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91 { |
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92 Uint8 colR, colG, colB; |
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93 if (!dm_fread_byte(fp, &colR) || |
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94 !dm_fread_byte(fp, &colG) || |
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95 !dm_fread_byte(fp, &colB)) |
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96 return FALSE; |
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97 |
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98 pal[i].r = colR; |
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99 pal[i].g = colG; |
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100 pal[i].b = colB; |
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101 } |
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102 |
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103 return TRUE; |
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104 } |
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105 |
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106 |
| 435 | 107 int dmWriteImageData(DMImage *img, void *cbdata, BOOL (*writeRowCB)(void *, Uint8 *, size_t), const DMImageSpec *spec) |
| 108 { | |
| 109 int x, y, yscale, xscale, res = 0, rowSize, rowWidth; | |
| 110 Uint8 *row = NULL; | |
| 111 | |
| 112 // Allocate memory for row buffer | |
| 113 rowWidth = img->width * spec->scale; | |
| 114 rowSize = rowWidth * dmImageGetBytesPerPixel(spec->format); | |
| 115 | |
| 116 if ((row = dmMalloc(rowSize + 16)) == NULL) | |
| 117 { | |
| 118 res = DMERR_MALLOC; | |
| 119 goto done; | |
| 120 } | |
| 121 | |
| 122 // Generate the image | |
| 123 for (y = 0; y < img->height; y++) | |
| 124 { | |
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125 Uint8 *ptr1 = row, |
| 435 | 126 *ptr2 = ptr1 + rowWidth, |
| 127 *ptr3 = ptr2 + rowWidth; | |
| 128 | |
| 129 for (x = 0; x < img->width; x++) | |
| 130 { | |
| 131 Uint8 c = img->data[(y * img->pitch) + x], qr, qg, qb, qa; | |
| 132 switch (spec->format) | |
| 133 { | |
| 134 case DM_IFMT_PALETTE: | |
| 135 for (xscale = 0; xscale < spec->scale; xscale++) | |
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136 *ptr1++ = c; |
| 435 | 137 break; |
| 138 | |
| 139 case DM_IFMT_RGBA: | |
| 140 qr = img->pal[c].r; | |
| 141 qg = img->pal[c].g; | |
| 142 qb = img->pal[c].b; | |
| 143 qa = (c == img->ctrans) ? 0 : 255; | |
| 144 | |
| 145 for (xscale = 0; xscale < spec->scale; xscale++) | |
| 146 { | |
|
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147 *ptr1++ = qr; |
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148 *ptr1++ = qg; |
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149 *ptr1++ = qb; |
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150 *ptr1++ = qa; |
| 435 | 151 } |
| 152 break; | |
| 153 | |
| 154 case DM_IFMT_RGB: | |
| 155 qr = img->pal[c].r; | |
| 156 qg = img->pal[c].g; | |
| 157 qb = img->pal[c].b; | |
| 158 | |
| 159 for (xscale = 0; xscale < spec->scale; xscale++) | |
| 160 { | |
|
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161 *ptr1++ = qr; |
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162 *ptr1++ = qg; |
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163 *ptr1++ = qb; |
| 435 | 164 } |
| 165 break; | |
| 166 | |
| 167 case DM_IFMT_RGB_PLANE: | |
| 168 qr = img->pal[c].r; | |
| 169 qg = img->pal[c].g; | |
| 170 qb = img->pal[c].b; | |
| 171 | |
| 172 for (xscale = 0; xscale < spec->scale; xscale++) | |
| 173 { | |
| 174 *ptr1++ = qr; | |
| 175 *ptr2++ = qg; | |
| 176 *ptr3++ = qb; | |
| 177 } | |
| 178 break; | |
| 179 } | |
| 180 } | |
| 181 | |
| 182 for (yscale = 0; yscale < spec->scale; yscale++) | |
| 183 { | |
| 184 if (!writeRowCB(cbdata, row, rowSize)) | |
| 185 { | |
| 186 res = DMERR_FWRITE; | |
| 187 goto done; | |
| 188 } | |
| 189 } | |
| 190 } | |
| 191 | |
| 192 done: | |
| 193 dmFree(row); | |
| 194 return res; | |
| 195 } | |
| 196 | |
| 197 | |
| 198 #define DMCOL(x) (((x) >> 4) & 0xf) | |
| 199 | |
| 200 int dmWriteIFFMasterRAWPalette(const char *filename, DMImage *img, int ncolors) | |
| 201 { | |
| 202 FILE *fp; | |
| 203 int i; | |
| 204 | |
| 205 if ((fp = fopen(filename, "w")) == NULL) | |
| 206 { | |
| 207 dmError("IFFMasterRAW: Could not open file '%s' for writing.\n", filename); | |
| 208 return -15; | |
| 209 } | |
| 210 | |
| 211 for (i = 0; i < ncolors; i++) | |
| 212 { | |
| 213 int color; | |
| 214 if (i < img->ncolors) | |
| 215 { | |
| 216 color = (DMCOL(img->pal[i].r) << 8) | | |
| 217 (DMCOL(img->pal[i].g) << 4) | | |
| 218 (DMCOL(img->pal[i].b)); | |
| 219 } | |
| 220 else | |
| 221 color = 0; | |
| 222 | |
| 223 fprintf(fp, "\tdc.w $%04X\n", color); | |
| 224 } | |
| 225 | |
|
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226 fclose(fp); |
| 435 | 227 return 0; |
| 228 } | |
| 229 | |
| 230 | |
| 231 int dmWriteIFFMasterRAWImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 232 { | |
| 233 int xc, yc, plane, res; | |
| 234 DMBitStream bs; | |
| 235 | |
| 236 if ((res = dmInitBitStream(&bs, fp)) != DMERR_OK) | |
| 237 return res; | |
| 238 | |
| 239 if (spec->interleave) | |
| 240 { | |
| 241 // Output bitplanes in interleaved format (each plane of line sequentially) | |
| 242 for (yc = 0; yc < img->height; yc++) | |
| 243 { | |
| 244 for (plane = 0; plane < spec->nplanes; plane++) | |
| 245 { | |
| 246 Uint8 *sp = img->data + yc * img->pitch; | |
| 247 for (xc = 0; xc < img->width; xc++) | |
| 248 { | |
| 249 if (!dmPutBits(&bs, (sp[xc] & (1 << plane)) ? 1 : 0, 1)) | |
| 250 return DMERR_FWRITE; | |
| 251 } | |
| 252 } | |
| 253 } | |
| 254 } | |
| 255 else | |
| 256 { | |
| 257 // Output each bitplane in sequence | |
| 258 for (plane = 0; plane < spec->nplanes; plane++) | |
| 259 { | |
| 260 for (yc = 0; yc < img->height; yc++) | |
| 261 { | |
| 262 Uint8 *sp = img->data + yc * img->pitch; | |
| 263 for (xc = 0; xc < img->width; xc++) | |
| 264 { | |
| 265 if (!dmPutBits(&bs, (sp[xc] & (1 << plane)) ? 1 : 0, 1)) | |
| 266 return DMERR_FWRITE; | |
| 267 } | |
| 268 } | |
| 269 } | |
| 270 } | |
| 271 | |
| 272 return dmFlushBitStream(&bs); | |
| 273 } | |
| 274 | |
| 275 int dmWriteIFFMasterRAWImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 276 { | |
| 277 FILE *fp; | |
| 278 int res; | |
| 279 | |
| 280 if ((fp = fopen(filename, "wb")) == NULL) | |
| 281 { | |
| 282 dmError("IFFMasterRAW: Could not open file '%s' for writing.\n", filename); | |
| 283 return DMERR_FOPEN; | |
| 284 } | |
| 285 | |
| 286 res = dmWriteIFFMasterRAWImageFILE(fp, img, spec); | |
| 287 | |
| 288 fclose(fp); | |
| 289 return res; | |
| 290 } | |
| 291 | |
| 292 | |
| 293 static BOOL dmWritePPMRow(void *cbdata, Uint8 *row, size_t len) | |
| 294 { | |
| 295 return fwrite(row, sizeof(Uint8), len, (FILE *) cbdata) == len; | |
| 296 } | |
| 297 | |
| 298 | |
| 299 int dmWritePPMImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 300 { | |
| 301 // Write PPM header | |
| 302 fprintf(fp, | |
| 303 "P6\n%d %d\n255\n", | |
| 304 img->width * spec->scale, | |
| 305 img->height * spec->scale); | |
| 306 | |
| 307 // Write image data | |
| 308 spec->format = DM_IFMT_RGB; | |
| 309 return dmWriteImageData(img, (void *) fp, dmWritePPMRow, spec); | |
| 310 } | |
| 311 | |
| 312 | |
| 313 int dmWritePPMImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 314 { | |
| 315 FILE *fp; | |
| 316 int res; | |
| 317 | |
| 318 // Create output file | |
| 319 if ((fp = fopen(filename, "wb")) == NULL) | |
| 320 { | |
| 321 dmError("PPM: could not open file '%s' for writing.\n", filename); | |
| 322 return DMERR_FOPEN; | |
| 323 } | |
| 324 | |
| 325 res = dmWritePPMImageFILE(fp, img, spec); | |
| 326 | |
| 327 fclose(fp); | |
| 328 return res; | |
| 329 } | |
| 330 | |
| 331 | |
| 332 #ifdef DM_USE_LIBPNG | |
| 333 static BOOL dmWritePNGRow(void *cbdata, Uint8 *row, size_t len) | |
| 334 { | |
| 335 png_structp png_ptr = cbdata; | |
| 336 (void) len; | |
| 337 | |
| 338 if (setjmp(png_jmpbuf(png_ptr))) | |
| 339 return FALSE; | |
| 340 | |
| 341 png_write_row(png_ptr, row); | |
| 342 | |
| 343 return TRUE; | |
| 344 } | |
| 345 | |
| 346 | |
| 347 int dmWritePNGImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 348 { | |
| 349 png_structp png_ptr = NULL; | |
| 350 png_infop info_ptr = NULL; | |
| 351 png_colorp palette = NULL; | |
| 352 int fmt, res = DMERR_OK; | |
| 353 | |
| 354 // Create PNG structures | |
| 355 png_ptr = png_create_write_struct( | |
| 356 PNG_LIBPNG_VER_STRING, | |
| 357 NULL, NULL, NULL); | |
| 358 | |
| 359 if (png_ptr == NULL) | |
| 360 { | |
| 361 dmError("PNG: png_create_write_struct() failed.\n"); | |
| 362 res = DMERR_MALLOC; | |
| 363 goto error; | |
| 364 } | |
| 365 | |
| 366 info_ptr = png_create_info_struct(png_ptr); | |
| 367 if (info_ptr == NULL) | |
| 368 { | |
| 369 dmError("PNG: png_create_info_struct(%p) failed.\n", png_ptr); | |
| 370 res = DMERR_INIT_FAIL; | |
| 371 goto error; | |
| 372 } | |
| 373 | |
| 374 if (setjmp(png_jmpbuf(png_ptr))) | |
| 375 { | |
| 376 dmError("PNG: Error during image writing..\n"); | |
| 377 res = DMERR_INIT_FAIL; | |
| 378 goto error; | |
| 379 } | |
| 380 | |
| 381 png_init_io(png_ptr, fp); | |
| 382 | |
| 383 // Write PNG header info | |
| 384 switch (spec->format) | |
| 385 { | |
| 386 case DM_IFMT_PALETTE: fmt = PNG_COLOR_TYPE_PALETTE; break; | |
| 387 case DM_IFMT_RGB : fmt = PNG_COLOR_TYPE_RGB; break; | |
| 388 case DM_IFMT_RGBA : fmt = PNG_COLOR_TYPE_RGB_ALPHA; break; | |
| 389 default: | |
|
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390 dmError("PNG: Unsupported image format %d.\n", spec->format); |
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391 res = DMERR_NOT_SUPPORTED; |
| 435 | 392 goto error; |
| 393 } | |
| 394 | |
| 395 png_set_IHDR(png_ptr, info_ptr, | |
| 396 img->width * spec->scale, | |
| 397 img->height * spec->scale, | |
| 398 8, /* bits per component */ | |
| 399 fmt, | |
| 400 PNG_INTERLACE_NONE, | |
| 401 PNG_COMPRESSION_TYPE_DEFAULT, | |
| 402 PNG_FILTER_TYPE_DEFAULT); | |
| 403 | |
| 404 // Palette | |
| 405 if (spec->format == DM_IFMT_PALETTE) | |
| 406 { | |
| 407 int i; | |
| 408 | |
| 409 palette = png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof(png_color)); | |
| 410 if (palette == NULL) | |
| 411 { | |
| 412 dmError("PNG: Could not allocate palette structure."); | |
|
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d1f7ddc84c7c
Return more sensible error values where appropriate instead of just
Matti Hamalainen <ccr@tnsp.org>
parents:
451
diff
changeset
|
413 res = DMERR_MALLOC; |
| 435 | 414 goto error; |
| 415 } | |
| 416 | |
| 417 memset(palette, 0, PNG_MAX_PALETTE_LENGTH * sizeof(png_color)); | |
| 418 | |
| 419 for (i = 0; i < img->ncolors; i++) | |
| 420 { | |
| 421 palette[i].red = img->pal[i].r; | |
| 422 palette[i].green = img->pal[i].g; | |
| 423 palette[i].blue = img->pal[i].b; | |
| 424 } | |
| 425 | |
| 426 png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH); | |
| 427 } | |
| 428 | |
| 429 // png_set_gAMA(png_ptr, info_ptr, 2.2); | |
| 430 | |
| 431 png_write_info(png_ptr, info_ptr); | |
| 432 | |
| 433 | |
| 434 // Write compressed image data | |
| 435 dmWriteImageData(img, (void *) png_ptr, dmWritePNGRow, spec); | |
| 436 | |
| 437 // Write footer | |
| 438 png_write_end(png_ptr, NULL); | |
| 439 | |
| 440 error: | |
| 441 png_free(png_ptr, palette); | |
| 442 palette = NULL; | |
| 443 | |
| 444 if (png_ptr && info_ptr) | |
| 445 png_destroy_write_struct(&png_ptr, &info_ptr); | |
| 446 | |
| 447 return res; | |
| 448 } | |
| 449 | |
| 450 | |
| 451 int dmWritePNGImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 452 { | |
| 453 int res; | |
| 454 FILE *fp; | |
| 455 | |
| 456 if ((fp = fopen(filename, "wb")) == NULL) | |
| 457 { | |
| 458 dmError("PNG: could not open file '%s' for writing.\n", filename); | |
| 459 return DMERR_FOPEN; | |
| 460 } | |
| 461 | |
| 462 res = dmWritePNGImageFILE(fp, img, spec); | |
| 463 | |
| 464 fclose(fp); | |
| 465 return res; | |
| 466 } | |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
467 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
468 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
469 int dmReadPNGImageFILE(FILE *fp, DMImage **pimg) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
470 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
471 png_structp png_ptr = NULL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
472 png_infop info_ptr = NULL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
473 png_colorp palette = NULL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
474 png_bytep *row_pointers = NULL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
475 png_uint_32 width, height; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
476 int i, bit_depth, color_type, ncolors; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
477 int res = DMERR_OK; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
478 DMImage *img; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
479 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
480 // Create PNG structures |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
481 png_ptr = png_create_read_struct( |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
482 PNG_LIBPNG_VER_STRING, |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
483 NULL, NULL, NULL); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
484 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
485 if (png_ptr == NULL) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
486 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
487 dmError("PNG: png_create_write_struct() failed.\n"); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
488 res = DMERR_MALLOC; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
489 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
490 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
491 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
492 info_ptr = png_create_info_struct(png_ptr); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
493 if (info_ptr == NULL) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
494 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
495 dmError("PNG: png_create_info_struct(%p) failed.\n", png_ptr); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
496 res = DMERR_INIT_FAIL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
497 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
498 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
499 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
500 if (setjmp(png_jmpbuf(png_ptr))) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
501 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
502 dmError("PNG: Error during image reading..\n"); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
503 res = DMERR_INIT_FAIL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
504 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
505 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
506 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
507 png_init_io(png_ptr, fp); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
508 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
509 // Read image information |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
510 png_read_info(png_ptr, info_ptr); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
511 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
512 png_get_IHDR(png_ptr, info_ptr, &width, &height, |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
513 &bit_depth, &color_type, NULL, NULL, NULL); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
514 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
515 if (width < 1 || height < 1) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
516 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
517 dmError("PNG: Invalid width or height (%d x %d)\n", |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
518 width, height); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
519 res = DMERR_INVALID_DATA; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
520 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
521 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
522 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
523 switch (color_type) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
524 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
525 case PNG_COLOR_TYPE_GRAY: |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
526 if (bit_depth < 8) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
527 png_set_expand_gray_1_2_4_to_8(png_ptr); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
528 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
529 if (bit_depth > 8) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
530 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
531 dmError("PNG: Unsupported bit depth for grayscale image: %d\n", |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
532 bit_depth); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
533 res = DMERR_NOT_SUPPORTED; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
534 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
535 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
536 break; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
537 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
538 case PNG_COLOR_TYPE_PALETTE: |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
539 png_set_packing(png_ptr); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
540 break; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
541 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
542 default: |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
543 dmError("PNG: RGB/RGBA images not supported for loading.\n"); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
544 res = DMERR_NOT_SUPPORTED; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
545 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
546 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
547 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
548 // Allocate image |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
549 dmMsg(2, "PNG: %d x %d, depth=%d, type=%d\n", |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
550 width, height, bit_depth, color_type); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
551 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
552 if ((*pimg = img = dmImageAlloc(width, height)) == NULL) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
553 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
554 dmError("PNG: Could not allocate image data.\n"); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
555 res = DMERR_MALLOC; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
556 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
557 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
558 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
559 // ... |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
560 row_pointers = png_malloc(png_ptr, height * sizeof(png_bytep)); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
561 for (i = 0; i < img->height; i++) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
562 row_pointers[i] = img->data + (i * img->pitch); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
563 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
564 png_read_image(png_ptr, row_pointers); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
565 |
|
349a2ff11531
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566 png_read_end(png_ptr, NULL); |
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567 |
|
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568 // Create palette |
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569 palette = png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof(png_color)); |
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570 if (palette == NULL) |
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571 { |
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572 dmError("PNG: Could not allocate palette structure."); |
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573 res = DMERR_MALLOC; |
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574 goto error; |
|
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|
575 } |
|
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576 |
|
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577 switch (color_type) |
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578 { |
|
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579 case PNG_COLOR_TYPE_GRAY: |
|
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580 ncolors = 256; |
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581 dmMsg(2, "PNG: Generating %d color grayscale palette.\n", ncolors); |
|
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|
582 |
|
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|
583 if (!dmImageAllocPalette(img, ncolors)) |
|
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584 { |
|
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585 res = DMERR_MALLOC; |
|
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586 goto error; |
|
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587 } |
|
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diff
changeset
|
588 |
|
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589 for (i = 0; i < img->ncolors; i++) |
|
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changeset
|
590 { |
|
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591 img->pal[i].r = img->pal[i].g = img->pal[i].b = i; |
|
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592 } |
|
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593 break; |
|
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|
594 |
|
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595 case PNG_COLOR_TYPE_PALETTE: |
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596 png_get_PLTE(png_ptr, info_ptr, &palette, &ncolors); |
|
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597 dmMsg(2, "PNG: Palette of %d colors found.\n", ncolors); |
|
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598 if (ncolors <= 0) |
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599 goto error; |
|
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600 |
|
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601 if (!dmImageAllocPalette(img, ncolors)) |
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602 { |
|
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603 res = DMERR_MALLOC; |
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604 goto error; |
|
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605 } |
|
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changeset
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606 |
|
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607 for (i = 0; i < img->ncolors; i++) |
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608 { |
|
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609 img->pal[i].r = palette[i].red; |
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610 img->pal[i].g = palette[i].green; |
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611 img->pal[i].b = palette[i].blue; |
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612 } |
|
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613 break; |
|
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614 } |
|
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changeset
|
615 |
|
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|
616 error: |
|
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617 png_free(png_ptr, palette); |
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618 |
|
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619 if (png_ptr && info_ptr) |
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620 png_destroy_read_struct(&png_ptr, &info_ptr, NULL); |
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621 |
|
349a2ff11531
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622 return res; |
|
349a2ff11531
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diff
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|
623 } |
|
349a2ff11531
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changeset
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624 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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changeset
|
625 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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|
626 int dmReadPNGImage(const char *filename, DMImage **img) |
|
349a2ff11531
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|
627 { |
|
349a2ff11531
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628 int res; |
|
349a2ff11531
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629 FILE *fp; |
|
349a2ff11531
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630 |
|
349a2ff11531
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631 if ((fp = fopen(filename, "rb")) == NULL) |
|
349a2ff11531
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|
632 { |
|
349a2ff11531
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633 dmError("PNG: Could not open file '%s' for reading.\n", filename); |
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634 return DMERR_FOPEN; |
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349a2ff11531
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635 } |
|
349a2ff11531
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diff
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|
636 |
|
349a2ff11531
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637 res = dmReadPNGImageFILE(fp, img); |
|
349a2ff11531
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638 |
|
349a2ff11531
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|
639 fclose(fp); |
|
349a2ff11531
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|
640 return res; |
|
349a2ff11531
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changeset
|
641 } |
| 435 | 642 #endif |
| 643 | |
| 644 | |
| 645 typedef struct | |
| 646 { | |
| 647 Uint8 r,g,b; | |
| 648 } DMPCXColor; | |
| 649 | |
| 650 | |
| 651 typedef struct | |
| 652 { | |
| 653 Uint8 manufacturer, | |
| 654 version, | |
| 655 encoding, | |
| 656 bpp; | |
| 657 Uint16 xmin, ymin, xmax, ymax; | |
| 658 Uint16 hres, vres; | |
| 659 DMPCXColor colormap[16]; | |
| 660 Uint8 reserved; | |
| 661 Uint8 nplanes; | |
| 662 Uint16 bpl; | |
| 663 Uint16 palinfo; | |
| 664 Uint8 filler[58]; | |
| 665 } DMPCXHeader; | |
| 666 | |
| 667 | |
| 668 typedef struct | |
| 669 { | |
| 670 DMPCXHeader *header; | |
| 671 Uint8 *buf; | |
| 672 size_t bufLen, bufOffs; | |
| 673 int format; | |
| 674 FILE *fp; | |
| 675 } DMPCXData; | |
| 676 | |
| 677 | |
| 678 static inline Uint8 dmPCXGetByte(Uint8 *row, const size_t len, const size_t soffs) | |
| 679 { | |
| 680 return (soffs < len) ? row[soffs] : 0; | |
| 681 } | |
| 682 | |
| 683 static BOOL dmPCXFlush(DMPCXData *pcx) | |
| 684 { | |
| 685 BOOL ret = TRUE; | |
| 686 if (pcx->bufOffs > 0) | |
| 687 ret = fwrite(pcx->buf, sizeof(Uint8), pcx->bufOffs, pcx->fp) == pcx->bufOffs; | |
| 688 pcx->bufOffs = 0; | |
| 689 return ret; | |
| 690 } | |
| 691 | |
| 692 static inline BOOL dmPCXPutByte(DMPCXData *pcx, const Uint8 val) | |
| 693 { | |
| 694 if (pcx->bufOffs < pcx->bufLen) | |
| 695 { | |
| 696 pcx->buf[pcx->bufOffs++] = val; | |
| 697 return TRUE; | |
| 698 } | |
| 699 else | |
| 700 return dmPCXFlush(pcx); | |
| 701 } | |
| 702 | |
| 703 static BOOL dmWritePCXRow(void *cbdata, Uint8 *row, size_t len) | |
| 704 { | |
| 705 DMPCXData *pcx = (DMPCXData *) cbdata; | |
| 706 int plane; | |
| 707 size_t soffs = 0; | |
| 708 | |
| 709 // fprintf(stderr, "%d, %d * %d = %d\n", len, pcx->header->bpl, pcx->header->nplanes, pcx->header->nplanes * pcx->header->bpl); | |
| 710 | |
| 711 pcx->bufOffs = 0; | |
| 712 | |
| 713 for (plane = 0; plane < pcx->header->nplanes; plane++) | |
| 714 { | |
| 715 Uint8 data = dmPCXGetByte(row, len, soffs++), | |
| 716 count = 1; | |
| 717 | |
| 718 // size_t blen = pcx->header->bpl * pcx->header->nplanes; | |
| 719 size_t blen = pcx->header->bpl; | |
| 720 while (soffs < blen) | |
| 721 { | |
| 722 if (data == dmPCXGetByte(row, len, soffs) && count < 63) | |
| 723 { | |
| 724 count++; | |
| 725 soffs++; | |
| 726 } | |
| 727 else | |
| 728 { | |
| 729 if (count == 1 && (data & 0xC0) != 0xC0) | |
| 730 { | |
| 731 if (!dmPCXPutByte(pcx, data)) | |
| 732 return FALSE; | |
| 733 } | |
| 734 else | |
| 735 { | |
| 736 if (!dmPCXPutByte(pcx, 0xC0 | count) || | |
| 737 !dmPCXPutByte(pcx, data)) | |
| 738 return FALSE; | |
| 739 } | |
| 740 | |
| 741 data = dmPCXGetByte(row, len, soffs++); | |
| 742 count = 1; | |
| 743 } | |
| 744 } | |
| 745 | |
| 746 if (count > 1) | |
| 747 { | |
| 748 if (!dmPCXPutByte(pcx, 0xC0 | count) || | |
| 749 !dmPCXPutByte(pcx, data)) | |
| 750 return FALSE; | |
| 751 } | |
| 752 | |
| 753 if (!dmPCXFlush(pcx)) | |
| 754 return FALSE; | |
| 755 } | |
| 756 | |
| 757 | |
| 758 return TRUE; | |
| 759 } | |
| 760 | |
| 761 | |
| 762 int dmWritePCXImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 763 { | |
| 764 DMPCXData pcx; | |
| 765 DMPCXHeader hdr; | |
| 766 int res; | |
| 767 | |
| 768 // Create output file | |
| 769 pcx.buf = NULL; | |
| 770 pcx.format = spec->paletted ? DM_IFMT_PALETTE : DM_IFMT_RGB_PLANE; | |
| 771 pcx.header = &hdr; | |
| 772 pcx.fp = fp; | |
| 773 | |
| 774 // Create PCX header | |
| 775 memset(&hdr, 0, sizeof(hdr)); | |
| 776 if (spec->paletted) | |
| 777 { | |
| 778 int i; | |
| 779 for (i = 0; i < (img->ncolors > 16 ? 16 : img->ncolors); i++) | |
| 780 { | |
| 781 hdr.colormap[i].r = img->pal[i].r; | |
| 782 hdr.colormap[i].g = img->pal[i].g; | |
| 783 hdr.colormap[i].b = img->pal[i].b; | |
| 784 } | |
| 785 } | |
| 786 hdr.manufacturer = 10; | |
| 787 hdr.version = 5; | |
| 788 hdr.encoding = 1; | |
| 789 hdr.bpp = 8; | |
| 790 hdr.hres = img->width * spec->scale; | |
| 791 hdr.vres = img->height * spec->scale; | |
| 792 hdr.xmin = hdr.ymin = 0; | |
| 793 hdr.xmax = hdr.hres - 1; | |
| 794 hdr.ymax = hdr.vres - 1; | |
| 795 hdr.nplanes = dmImageGetBytesPerPixel(pcx.format); | |
| 796 hdr.palinfo = 1; | |
| 797 | |
| 798 res = (img->width * spec->scale); | |
| 799 hdr.bpl = res / 2; | |
| 800 if (res % 2) hdr.bpl++; | |
| 801 hdr.bpl *= 2; | |
| 802 | |
| 803 dmMsg(2, "PCX: paletted=%d, nplanes=%d, bpp=%d, bpl=%d\n", | |
| 804 spec->paletted, hdr.nplanes, hdr.bpp, hdr.bpl); | |
| 805 | |
| 806 pcx.bufLen = hdr.bpl * 4; | |
| 807 if ((pcx.buf = dmMalloc(pcx.bufLen)) == NULL) | |
| 808 { | |
| 809 dmError("PCX: Could not allocate %d bytes for RLE compression buffer.\n", | |
| 810 pcx.bufLen); | |
| 811 res = DMERR_MALLOC; | |
| 812 goto error; | |
| 813 } | |
| 814 | |
| 815 // Write PCX header | |
| 816 if (!dm_fwrite_byte(pcx.fp, hdr.manufacturer) || | |
| 817 !dm_fwrite_byte(pcx.fp, hdr.version) || | |
| 818 !dm_fwrite_byte(pcx.fp, hdr.encoding) || | |
| 819 !dm_fwrite_byte(pcx.fp, hdr.bpp)) | |
| 820 { | |
| 821 dmError("PCX: Could not write basic header data.\n"); | |
| 822 res = DMERR_FWRITE; | |
| 823 goto error; | |
| 824 } | |
| 825 | |
| 826 if (!dm_fwrite_le16(pcx.fp, hdr.xmin) || | |
| 827 !dm_fwrite_le16(pcx.fp, hdr.ymin) || | |
| 828 !dm_fwrite_le16(pcx.fp, hdr.xmax) || | |
| 829 !dm_fwrite_le16(pcx.fp, hdr.ymax) || | |
| 830 !dm_fwrite_le16(pcx.fp, hdr.hres) || | |
| 831 !dm_fwrite_le16(pcx.fp, hdr.vres)) | |
| 832 { | |
| 833 dmError("PCX: Could not write image dimensions.\n"); | |
| 834 res = DMERR_FWRITE; | |
| 835 goto error; | |
| 836 } | |
| 837 | |
| 838 if (!dm_fwrite_str(pcx.fp, (Uint8 *) &hdr.colormap, sizeof(hdr.colormap))) | |
| 839 { | |
| 840 dmError("PCX: Could not write colormap.\n"); | |
| 841 res = DMERR_FWRITE; | |
| 842 goto error; | |
| 843 } | |
| 844 | |
| 845 if (!dm_fwrite_byte(pcx.fp, hdr.reserved) || | |
| 846 !dm_fwrite_byte(pcx.fp, hdr.nplanes) || | |
| 847 !dm_fwrite_le16(pcx.fp, hdr.bpl) || | |
| 848 !dm_fwrite_le16(pcx.fp, hdr.palinfo) || | |
| 849 !dm_fwrite_str(pcx.fp, (Uint8 *) &hdr.filler, sizeof(hdr.filler))) | |
| 850 { | |
| 851 dmError("PCX: Could not write header remainder.\n"); | |
| 852 res = DMERR_FWRITE; | |
| 853 goto error; | |
| 854 } | |
| 855 | |
| 856 // Write image data | |
| 857 res = dmWriteImageData(img, (void *) &pcx, dmWritePCXRow, spec); | |
| 858 | |
| 859 // Write VGA palette | |
| 860 if (spec->paletted) | |
| 861 { | |
| 862 int i; | |
| 863 dm_fwrite_byte(pcx.fp, 0x0C); | |
| 864 dmMsg(2, "PCX: Writing palette of %d active entries.\n", img->ncolors); | |
| 865 | |
| 866 for (i = 0; i < img->ncolors; i++) | |
| 867 { | |
| 868 dm_fwrite_byte(pcx.fp, img->pal[i].r); | |
| 869 dm_fwrite_byte(pcx.fp, img->pal[i].g); | |
| 870 dm_fwrite_byte(pcx.fp, img->pal[i].b); | |
| 871 } | |
| 872 | |
| 873 // Pad the palette, if necessary | |
| 874 for (; i < 256; i++) | |
| 875 { | |
| 876 dm_fwrite_byte(pcx.fp, 0); | |
| 877 dm_fwrite_byte(pcx.fp, 0); | |
| 878 dm_fwrite_byte(pcx.fp, 0); | |
| 879 } | |
| 880 } | |
| 881 | |
| 882 error: | |
| 883 dmFree(pcx.buf); | |
| 884 return res; | |
| 885 } | |
| 886 | |
| 887 | |
| 888 int dmWritePCXImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 889 { | |
| 890 FILE *fp; | |
| 891 int res; | |
| 892 | |
| 893 if ((fp = fopen(filename, "wb")) == NULL) | |
| 894 { | |
| 895 dmError("PCX: Could not open file '%s' for writing.\n", filename); | |
| 896 return DMERR_FOPEN; | |
| 897 } | |
| 898 | |
| 899 res = dmWritePCXImageFILE(fp, img, spec); | |
| 900 | |
| 901 fclose(fp); | |
| 902 return res; | |
| 903 } | |
| 904 | |
| 905 | |
| 906 static BOOL dmPCXDecodeRLERow(FILE *fp, Uint8 *buf, const size_t bufLen) | |
| 907 { | |
| 908 size_t offs = 0; | |
| 909 do | |
| 910 { | |
| 911 int count; | |
| 912 Uint8 data; | |
| 913 | |
| 914 if (!dm_fread_byte(fp, &data)) | |
| 915 return FALSE; | |
| 916 | |
| 917 if ((data & 0xC0) == 0xC0) | |
| 918 { | |
| 919 count = data & 0x3F; | |
| 920 if (!dm_fread_byte(fp, &data)) | |
| 921 return FALSE; | |
| 922 } | |
| 923 else | |
| 924 count = 1; | |
| 925 | |
| 926 while (count-- && offs < bufLen) | |
| 927 buf[offs++] = data; | |
| 928 | |
| 929 } while (offs < bufLen); | |
| 930 | |
| 931 return TRUE; | |
| 932 } | |
| 933 | |
| 934 | |
| 935 int dmReadPCXImageFILE(FILE *fp, DMImage **pimg) | |
| 936 { | |
| 937 DMImage *img; | |
| 938 DMPCXData pcx; | |
| 939 DMPCXHeader hdr; | |
| 940 BOOL paletted; | |
| 941 int res = 0, yc, xc; | |
| 942 Uint8 *dp; | |
| 943 | |
| 944 pcx.buf = NULL; | |
| 945 | |
| 946 // Read PCX header | |
| 947 if (!dm_fread_byte(fp, &hdr.manufacturer) || | |
| 948 !dm_fread_byte(fp, &hdr.version) || | |
| 949 !dm_fread_byte(fp, &hdr.encoding) || | |
| 950 !dm_fread_byte(fp, &hdr.bpp)) | |
| 951 { | |
| 952 dmError("PCX: Could not read basic header data.\n"); | |
| 953 res = DMERR_FREAD; | |
| 954 goto error; | |
| 955 } | |
| 956 | |
| 957 if (hdr.manufacturer != 10 || | |
| 958 hdr.version != 5 || | |
| 959 hdr.encoding != 1 || | |
| 960 hdr.bpp != 8) | |
| 961 { | |
| 962 dmError("PCX: Not a PCX file, or unsupported variant.\n"); | |
| 963 res = DMERR_FREAD; | |
| 964 goto error; | |
| 965 } | |
| 966 | |
| 967 if (!dm_fread_le16(fp, &hdr.xmin) || | |
| 968 !dm_fread_le16(fp, &hdr.ymin) || | |
| 969 !dm_fread_le16(fp, &hdr.xmax) || | |
| 970 !dm_fread_le16(fp, &hdr.ymax) || | |
| 971 !dm_fread_le16(fp, &hdr.hres) || | |
| 972 !dm_fread_le16(fp, &hdr.vres)) | |
| 973 { | |
| 974 dmError("PCX: Could not read image dimensions.\n"); | |
| 975 res = DMERR_FREAD; | |
| 976 goto error; | |
| 977 } | |
| 978 | |
| 979 if (!dm_fread_str(fp, (Uint8 *) &hdr.colormap, sizeof(hdr.colormap))) | |
| 980 { | |
| 981 dmError("PCX: Could not read colormap.\n"); | |
| 982 res = DMERR_FREAD; | |
| 983 goto error; | |
| 984 } | |
| 985 | |
| 986 if (!dm_fread_byte(fp, &hdr.reserved) || | |
| 987 !dm_fread_byte(fp, &hdr.nplanes) || | |
| 988 !dm_fread_le16(fp, &hdr.bpl) || | |
| 989 !dm_fread_le16(fp, &hdr.palinfo) || | |
| 990 !dm_fread_str(fp, (Uint8 *) &hdr.filler, sizeof(hdr.filler))) | |
| 991 { | |
| 992 dmError("PCX: Could not read header remainder.\n"); | |
| 993 res = DMERR_FREAD; | |
| 994 goto error; | |
| 995 } | |
| 996 | |
| 997 if (hdr.nplanes != 3 && hdr.nplanes != 1) | |
| 998 { | |
| 999 dmError("PCX: Unsupported number of bitplanes %d.\n", hdr.nplanes); | |
| 1000 res = DMERR_FREAD; | |
| 1001 goto error; | |
| 1002 } | |
| 1003 | |
| 1004 // Allocate image | |
| 1005 if ((*pimg = img = dmImageAlloc(hdr.xmax - hdr.xmin + 1, hdr.ymax - hdr.ymin + 1)) == NULL) | |
| 1006 { | |
| 1007 dmError("PCX: Could not allocate image structure.\n"); | |
| 1008 res = DMERR_MALLOC; | |
| 1009 goto error; | |
| 1010 } | |
| 1011 | |
| 1012 paletted = hdr.nplanes == 1; | |
| 1013 pcx.bufLen = hdr.nplanes * hdr.bpl; | |
| 1014 if ((pcx.buf = dmMalloc(pcx.bufLen)) == NULL) | |
| 1015 { | |
| 1016 dmError("PCX: Could not allocate RLE buffer.\n"); | |
| 1017 res = DMERR_MALLOC; | |
| 1018 goto error; | |
| 1019 } | |
| 1020 | |
| 1021 // Read image data | |
| 1022 dp = img->data; | |
| 1023 for (yc = 0; yc < img->height; yc++) | |
| 1024 { | |
| 1025 // Decode row of RLE'd data | |
| 1026 if (!dmPCXDecodeRLERow(fp, pcx.buf, pcx.bufLen)) | |
| 1027 { | |
| 1028 dmError("PCX: Error decoding RLE data.\n"); | |
| 1029 res = DMERR_INVALID_DATA; | |
| 1030 goto error; | |
| 1031 } | |
| 1032 | |
| 1033 // Decode bitplanes | |
| 1034 switch (hdr.nplanes) | |
| 1035 { | |
| 1036 case 1: | |
| 1037 memcpy(dp, pcx.buf, img->width); | |
| 1038 break; | |
| 1039 | |
| 1040 case 3: | |
| 1041 { | |
| 1042 Uint8 *dptr = dp, | |
| 1043 *sptr1 = pcx.buf, | |
| 1044 *sptr2 = sptr1 + hdr.bpl, | |
| 1045 *sptr3 = sptr2 + hdr.bpl; | |
| 1046 | |
| 1047 for (xc = 0; xc < img->width; xc++) | |
| 1048 { | |
| 1049 *dptr++ = *sptr1++; | |
| 1050 *dptr++ = *sptr2++; | |
| 1051 *dptr++ = *sptr3++; | |
| 1052 } | |
| 1053 } | |
| 1054 break; | |
| 1055 } | |
| 1056 | |
| 1057 dp += img->pitch; | |
| 1058 } | |
| 1059 | |
| 1060 // Read VGA palette | |
| 1061 if (paletted) | |
| 1062 { | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1063 int i, ncolors; |
| 435 | 1064 Uint8 tmpb; |
| 1065 BOOL read; | |
| 1066 | |
| 1067 if (!dm_fread_byte(fp, &tmpb) || tmpb != 0x0C) | |
| 1068 { | |
| 1069 read = FALSE; | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1070 ncolors = 16; |
| 435 | 1071 } |
| 1072 else | |
| 1073 { | |
| 1074 read = TRUE; | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1075 ncolors = 256; |
| 435 | 1076 } |
| 1077 | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1078 if (!dmImageAllocPalette(img, ncolors)) |
| 435 | 1079 { |
| 1080 dmError("PCX: Could not allocate palette data!\n"); | |
| 1081 res = DMERR_MALLOC; | |
| 1082 goto error; | |
| 1083 } | |
| 1084 | |
| 1085 if (read) | |
| 1086 { | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1087 if (!dmReadPaletteData(fp, img->pal, ncolors)) |
| 435 | 1088 { |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1089 dmError("PCX: Error reading palette.\n"); |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1090 return DMERR_FREAD; |
| 435 | 1091 } |
| 1092 } | |
| 1093 else | |
| 1094 { | |
| 1095 for (i = 0; i < img->ncolors; i++) | |
| 1096 { | |
| 1097 if (i < 16) | |
| 1098 { | |
| 1099 img->pal[i].r = hdr.colormap[i].r; | |
| 1100 img->pal[i].g = hdr.colormap[i].g; | |
| 1101 img->pal[i].b = hdr.colormap[i].b; | |
| 1102 } | |
| 1103 } | |
| 1104 } | |
| 1105 } | |
| 1106 | |
| 1107 error: | |
| 1108 dmFree(pcx.buf); | |
| 1109 return res; | |
| 1110 } | |
| 1111 | |
| 1112 | |
| 1113 int dmReadPCXImage(const char *filename, DMImage **pimg) | |
| 1114 { | |
| 1115 FILE *fp; | |
| 1116 int res; | |
| 1117 | |
| 1118 if ((fp = fopen(filename, "rb")) == NULL) | |
| 1119 { | |
| 1120 dmError("PCX: Could not open file '%s' for reading.\n", filename); | |
| 1121 return -15; | |
| 1122 } | |
| 1123 | |
| 1124 res = dmReadPCXImageFILE(fp, pimg); | |
| 1125 | |
| 1126 fclose(fp); | |
| 1127 return res; | |
| 1128 } | |
| 1129 | |
| 1130 | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1131 #define IFF_ID_FORM 0x464F524D // "FORM" |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1132 #define IFF_ID_ILBM 0x494C424D // "ILBM" |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1133 #define IFF_ID_BMHD 0x424D4844 // "BMHD" |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1134 #define IFF_ID_CMAP 0x434D4150 // "CMAP" |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1135 #define IFF_ID_BODY 0x424F4459 // "BODY" |
|
449
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1136 #define IFF_ID_CAMG 0x43414D47 // "CAMG" |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1137 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1138 #define IFF_MASK_NONE 0 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1139 #define IFF_MASK_HAS_MASK 1 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1140 #define IFF_MASK_TRANSP 2 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1141 #define IFF_MASK_LASSO 3 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1142 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1143 #define IFF_COMP_NONE 0 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1144 #define IFF_COMP_BYTERUN1 1 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1145 |
|
449
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1146 #define IFF_CAMG_LACE 0x00000004 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1147 #define IFF_CAMG_HALFBRITE 0x00000080 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1148 #define IFF_CAMG_HAM 0x00000800 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1149 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1150 typedef struct |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1151 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1152 Uint32 id; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1153 Uint32 size; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1154 int count; |
| 445 | 1155 char str[6]; |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1156 } DMIFFChunk; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1157 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1158 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1159 typedef struct |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1160 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1161 Uint16 w, h; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1162 Sint16 x, y; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1163 Uint8 nplanes; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1164 Uint8 masking; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1165 Uint8 compression; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1166 Uint8 pad1; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1167 Uint16 transp; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1168 Uint8 xasp, yasp; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1169 Sint16 pagew, pageh; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1170 } DMIFFBMHD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1171 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1172 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1173 typedef struct |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1174 { |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1175 DMIFFChunk chBMHD, chCMAP, chBODY; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1176 DMIFFBMHD bmhd; |
|
449
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1177 Uint32 camg; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1178 int ncolors; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1179 DMColor *pal; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1180 BOOL paletted; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1181 } DMIFF; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1182 |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1183 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1184 static BOOL dmReadIFFChunk(FILE *fp, DMIFFChunk *chunk) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1185 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1186 if (!dm_fread_be32(fp, &chunk->id) || |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1187 !dm_fread_be32(fp, &chunk->size)) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1188 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1189 dmError("ILBM: Could not read IFF chunk header.\n"); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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442
diff
changeset
|
1190 return FALSE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1191 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1192 else |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1193 return TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1194 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1195 |
| 445 | 1196 static char * dmGetIFFChunkID(DMIFFChunk *chunk) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1197 { |
| 445 | 1198 chunk->str[0] = (chunk->id >> 24) & 0xff; |
| 1199 chunk->str[1] = (chunk->id >> 16) & 0xff; | |
| 1200 chunk->str[2] = (chunk->id >> 8) & 0xff; | |
| 1201 chunk->str[3] = (chunk->id) & 0xff; | |
| 1202 chunk->str[4] = 0; | |
| 1203 return chunk->str; | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1204 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1205 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1206 static BOOL dmSkipIFFChunkRest(FILE *fp, const DMIFFChunk *chunk, const Uint32 used) |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1207 { |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1208 if (chunk->size > used) |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1209 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1210 dmMsg(3, "ILBM: Skipping %d bytes (%d of %d consumed)\n", |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1211 chunk->size - used, used, chunk->size); |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1212 return fseeko(fp, chunk->size - used, SEEK_CUR) == 0; |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1213 } |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1214 else |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1215 return TRUE; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1216 } |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1217 |
| 445 | 1218 static BOOL dmCheckIFFChunk(DMIFFChunk *dest, DMIFFChunk *chunk, |
| 1219 const BOOL multi, const Uint32 minSize) | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1220 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1221 if (dest->count > 0 && !multi) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1222 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1223 dmError("ILBM: Multiple instances of chunk %s found.\n", |
| 445 | 1224 dmGetIFFChunkID(chunk)); |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1225 return FALSE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1226 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1227 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1228 dest->count++; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1229 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1230 if (chunk->size < minSize) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1231 return FALSE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1232 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1233 return TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1234 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1235 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1236 |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1237 static BOOL dmIFFDecodeByteRun1Row(FILE *fp, Uint8 *buf, const size_t bufLen) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1238 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1239 size_t offs = 0; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1240 do |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1241 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1242 Sint8 dcount; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1243 Uint8 data; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1244 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1245 if (!dm_fread_byte(fp, (Uint8 *) &dcount)) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1246 return FALSE; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1247 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1248 if (dcount == -128) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1249 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1250 if (!dm_fread_byte(fp, &data)) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1251 return FALSE; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1252 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1253 else |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1254 if (dcount < 0) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1255 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1256 int count = (-dcount) + 1; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1257 if (!dm_fread_byte(fp, &data)) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1258 return FALSE; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1259 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1260 while (count-- && offs < bufLen) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1261 buf[offs++] = data; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1262 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1263 else |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1264 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1265 int count = dcount + 1; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1266 while (count-- && offs < bufLen) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1267 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1268 if (!dm_fread_byte(fp, &data)) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1269 return FALSE; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1270 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1271 buf[offs++] = data; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1272 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1273 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1274 } while (offs < bufLen); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1275 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1276 return TRUE; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1277 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1278 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1279 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1280 static BOOL dmIFFReadOneRow(FILE *fp, DMIFF *iff, Uint8 *buf, const size_t bufLen) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1281 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1282 if (iff->bmhd.compression == IFF_COMP_BYTERUN1) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1283 return dmIFFDecodeByteRun1Row(fp, buf, bufLen); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1284 else |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1285 return dm_fread_str(fp, buf, bufLen); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1286 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1287 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1288 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1289 void dmDecodeBitPlane(Uint8 *dp, Uint8 *src, const int width, const int nplane) |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1290 { |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1291 int xc; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1292 for (xc = 0; xc < width; xc++) |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1293 { |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1294 const Uint8 data = (src[xc / 8] >> (7 - (xc & 7))) & 1; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1295 dp[xc] |= (data << nplane); |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1296 } |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1297 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
changeset
|
1298 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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parents:
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diff
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|
1299 |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1300 int dmDecodeILBMBody(FILE *fp, DMIFF *iff, DMImage **pimg, Uint32 *read) |
|
444
7d588807f91d
Clean up the IFF parser a bit.
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|
1301 { |
|
447
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1302 DMImage *img; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1303 Uint8 *buf; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1304 size_t bufLen; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1305 int yc, res = DMERR_OK; |
|
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diff
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|
1306 |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1307 *read = 0; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
changeset
|
1308 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1309 // Allocate image |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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|
1310 if ((*pimg = img = dmImageAlloc(iff->bmhd.w, iff->bmhd.h)) == NULL) |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1311 return DMERR_MALLOC; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1312 |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1313 // Allocate planar decoding buffer |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1314 bufLen = ((img->width + 15) / 16) * 2; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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|
1315 if ((buf = dmMalloc(bufLen)) == NULL) |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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|
1316 return DMERR_MALLOC; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1317 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1318 dmMsg(2, "ILBM: plane row size %d bytes.\n", bufLen); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
changeset
|
1319 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1320 // Decode the chunk |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1321 for (yc = 0; yc < img->height; yc++) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1322 { |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1323 int plane; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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|
1324 const int nplanes = iff->bmhd.nplanes; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
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|
1325 Uint8 *dp = img->data + (yc * img->pitch); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1326 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1327 memset(dp, 0, img->pitch); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1328 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1329 for (plane = 0; plane < nplanes; plane++) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1330 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1331 // Decompress or read data |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1332 if (!dmIFFReadOneRow(fp, iff, buf, bufLen)) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1333 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
changeset
|
1334 dmError("ILBM: Error in reading image plane #%d.\n", plane); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1335 res = DMERR_FREAD; |
|
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Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1336 goto error; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1337 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1338 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1339 // Decode bitplane |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1340 dmDecodeBitPlane(dp, buf, img->width, plane); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1341 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1342 *read += bufLen; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1343 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1344 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1345 // Read mask data |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1346 if (iff->bmhd.masking == IFF_MASK_HAS_MASK) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1347 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1348 int xc; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1349 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1350 // Decompress or read data |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1351 if (!dmIFFReadOneRow(fp, iff, buf, bufLen)) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1352 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1353 dmError("ILBM: Error in reading mask plane.\n"); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1354 res = DMERR_FREAD; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1355 goto error; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1356 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1357 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1358 // Decode mask |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1359 for (xc = 0; xc < img->width; xc++) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1360 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1361 const Uint8 data = (buf[xc / 8] >> (7 - (xc & 7))) & 1; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1362 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1363 // Black out any pixels with mask bit 0 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1364 if (!data) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1365 dp[xc] = 0; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1366 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1367 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1368 *read += bufLen; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1369 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1370 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1371 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1372 error: |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1373 dmFree(buf); |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1374 return res; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1375 } |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1376 |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1377 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1378 int dmReadILBMImageFILE(FILE *fp, DMImage **pimg) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1379 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1380 Uint32 idILBM; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1381 DMIFFChunk chunk; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1382 DMIFF iff; |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1383 Uint32 read; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1384 BOOL parsed = FALSE; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1385 int i, res = DMERR_OK; |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1386 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1387 memset(&iff, 0, sizeof(iff)); |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1388 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1389 // Read IFF FORM header |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1390 if (!dmReadIFFChunk(fp, &chunk) || |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1391 chunk.id != IFF_ID_FORM || |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1392 chunk.size < 32) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1393 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1394 dmError("ILBM: Not a IFF file.\n"); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1395 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1396 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1397 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1398 // Check IFF ILBM signature |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1399 if (!dm_fread_be32(fp, &idILBM) || |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1400 idILBM != IFF_ID_ILBM) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1401 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1402 dmError("ILBM: Not a ILBM file.\n"); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1403 return DMERR_INVALID_DATA; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1404 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1405 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1406 while (!parsed && !feof(fp)) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1407 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1408 if (!dmReadIFFChunk(fp, &chunk)) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1409 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1410 dmError("ILBM: Error reading IFF ILBM data.\n"); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1411 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1412 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1413 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1414 switch (chunk.id) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1415 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1416 case IFF_ID_BMHD: |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1417 // Check for multiple occurences of BMHD |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1418 if (!dmCheckIFFChunk(&iff.chBMHD, &chunk, FALSE, sizeof(iff.bmhd))) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1419 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1420 |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1421 // Read BMHD data |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1422 if (!dm_fread_be16(fp, &iff.bmhd.w) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1423 !dm_fread_be16(fp, &iff.bmhd.h) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1424 !dm_fread_be16(fp, (Uint16 *) &iff.bmhd.x) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1425 !dm_fread_be16(fp, (Uint16 *) &iff.bmhd.y) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1426 !dm_fread_byte(fp, &iff.bmhd.nplanes) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1427 !dm_fread_byte(fp, &iff.bmhd.masking) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1428 !dm_fread_byte(fp, &iff.bmhd.compression) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1429 !dm_fread_byte(fp, &iff.bmhd.pad1) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1430 !dm_fread_be16(fp, &iff.bmhd.transp) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1431 !dm_fread_byte(fp, &iff.bmhd.xasp) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1432 !dm_fread_byte(fp, &iff.bmhd.yasp) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1433 !dm_fread_be16(fp, (Uint16 *) &iff.bmhd.pagew) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1434 !dm_fread_be16(fp, (Uint16 *) &iff.bmhd.pageh)) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1435 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1436 dmError("ILBM: Error reading BMHD chunk.\n"); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1437 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1438 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1439 dmMsg(2, "ILBM: BMHD %d x %d @ %d, %d : nplanes=%d, comp=%d, mask=%d\n", |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1440 iff.bmhd.w, iff.bmhd.h, iff.bmhd.x, iff.bmhd.y, |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1441 iff.bmhd.nplanes, iff.bmhd.compression, iff.bmhd.masking); |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1442 |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1443 // Sanity check |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1444 if (iff.bmhd.nplanes < 1 || iff.bmhd.nplanes > 8 || |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1445 (iff.bmhd.compression != IFF_COMP_NONE && |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1446 iff.bmhd.compression != IFF_COMP_BYTERUN1) || |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1447 (iff.bmhd.masking != IFF_MASK_NONE && |
|
448
f1aab48a76fe
Add transp mask support to IFF ILBM loader.
Matti Hamalainen <ccr@tnsp.org>
parents:
447
diff
changeset
|
1448 iff.bmhd.masking != IFF_MASK_HAS_MASK && |
|
f1aab48a76fe
Add transp mask support to IFF ILBM loader.
Matti Hamalainen <ccr@tnsp.org>
parents:
447
diff
changeset
|
1449 iff.bmhd.masking != IFF_MASK_TRANSP)) |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1450 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1451 dmError("ILBM: Unsupported features, refusing to load.\n"); |
|
452
d1f7ddc84c7c
Return more sensible error values where appropriate instead of just
Matti Hamalainen <ccr@tnsp.org>
parents:
451
diff
changeset
|
1452 return DMERR_NOT_SUPPORTED; |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1453 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1454 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1455 if (!dmSkipIFFChunkRest(fp, &chunk, sizeof(iff.bmhd))) |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1456 return DMERR_FREAD; |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1457 break; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1458 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1459 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1460 case IFF_ID_CMAP: |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1461 // Check for multiple occurences of CMAP |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1462 if (!dmCheckIFFChunk(&iff.chCMAP, &chunk, FALSE, 3)) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1463 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1464 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1465 // Check for sanity |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1466 if (chunk.size % 3 != 0) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1467 dmError("ILBM: CMAP chunk size not divisible by 3, possibly broken file.\n"); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1468 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1469 iff.ncolors = chunk.size / 3; |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1470 dmMsg(2, "ILBM: CMAP %d entries (%d bytes)\n", |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1471 iff.ncolors, chunk.size, 1 << iff.bmhd.nplanes); |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1472 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1473 if (iff.bmhd.nplanes > 0 && iff.ncolors != 1 << iff.bmhd.nplanes) |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1474 dmMsg(2, "ILBM: Expected %d entries in CMAP.\n", 1 << iff.bmhd.nplanes); |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1475 |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1476 // Read palette |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1477 if (iff.ncolors > 0) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1478 { |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1479 if (!dmPaletteAlloc(&iff.pal, iff.ncolors)) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1480 { |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1481 dmError("ILBM: Could not allocate palette data.\n"); |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1482 return DMERR_MALLOC; |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1483 } |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1484 if (!dmReadPaletteData(fp, iff.pal, iff.ncolors)) |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1485 { |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1486 dmError("ILBM: Error reading CMAP.\n"); |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1487 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1488 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1489 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1490 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1491 if (iff.chBMHD.count && iff.chBODY.count) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1492 parsed = TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1493 break; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1494 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1495 case IFF_ID_BODY: |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1496 // Check for multiple occurences of CMAP |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1497 if (!dmCheckIFFChunk(&iff.chBODY, &chunk, FALSE, 1)) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1498 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1499 |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1500 // Check for sanity |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1501 if (!iff.chBMHD.count) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1502 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1503 dmError("ILBM: BODY chunk before BMHD?\n"); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1504 return DMERR_INVALID_DATA; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1505 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1506 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1507 dmMsg(2, "ILBM: BODY chunk size %d bytes\n", chunk.size); |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1508 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1509 // Decode the body |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1510 if ((res = dmDecodeILBMBody(fp, &iff, pimg, &read)) != DMERR_OK) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1511 return res; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1512 |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1513 if (!dmSkipIFFChunkRest(fp, &chunk, read)) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1514 return DMERR_FREAD; |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1515 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1516 if (iff.chCMAP.count) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1517 parsed = TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1518 break; |
|
449
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1519 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1520 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1521 case IFF_ID_CAMG: |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1522 if (!dm_fread_be32(fp, &iff.camg)) |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1523 { |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1524 dmError("ILBM: Error reading CAMG chunk.\n"); |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1525 return DMERR_FREAD; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1526 } |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1527 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1528 dmMsg(2, "ILBM: CAMG value 0x%08x\n", iff.camg); |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1529 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1530 if ((iff.camg & IFF_CAMG_HAM)) |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1531 { |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1532 dmError("ILBM: HAM files are not supported.\n"); |
|
452
d1f7ddc84c7c
Return more sensible error values where appropriate instead of just
Matti Hamalainen <ccr@tnsp.org>
parents:
451
diff
changeset
|
1533 return DMERR_NOT_SUPPORTED; |
|
449
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1534 } |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1535 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1536 if (!dmSkipIFFChunkRest(fp, &chunk, 4)) |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1537 return DMERR_FREAD; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1538 break; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1539 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1540 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1541 default: |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1542 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1543 dmMsg(3, "Unknown chunk ID '%s', size %d\n", |
| 445 | 1544 dmGetIFFChunkID(&chunk), chunk.size); |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1545 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1546 if (fseeko(fp, chunk.size, SEEK_CUR) != 0) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1547 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1548 dmError("ILBM: Error skipping in file."); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1549 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1550 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1551 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1552 break; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1553 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1554 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1555 if (chunk.size & 1) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1556 fgetc(fp); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1557 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1558 |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1559 // Set colormap after finishing |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1560 if (iff.pal != NULL && iff.ncolors > 0 && *pimg != NULL) |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1561 { |
|
449
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1562 // If halfbrite is used, duplicate the palette |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1563 if (iff.camg & IFF_CAMG_HALFBRITE) |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1564 { |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1565 if (iff.ncolors > 128) |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1566 { |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1567 dmError("ILBM: Halfbrite enabled, but ncolors > 128.\n"); |
|
452
d1f7ddc84c7c
Return more sensible error values where appropriate instead of just
Matti Hamalainen <ccr@tnsp.org>
parents:
451
diff
changeset
|
1568 return DMERR_NOT_SUPPORTED; |
|
449
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1569 } |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1570 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1571 if ((iff.pal = dmRealloc(iff.pal, sizeof(DMColor) * iff.ncolors * 2)) == NULL) |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1572 return DMERR_MALLOC; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1573 |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1574 for (i = 0; i < iff.ncolors; i++) |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1575 { |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1576 int i2 = iff.ncolors + i; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1577 iff.pal[i2].r = iff.pal[i].r / 2; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1578 iff.pal[i2].g = iff.pal[i].g / 2; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1579 iff.pal[i2].b = iff.pal[i].b / 2; |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1580 } |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1581 } |
|
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1582 |
|
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1583 (*pimg)->ncolors = iff.ncolors; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1584 (*pimg)->pal = iff.pal; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1585 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1586 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1587 return res; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1588 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1589 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1590 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1591 int dmReadILBMImage(const char *filename, DMImage **pimg) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1592 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1593 FILE *fp; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1594 int res; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1595 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1596 if ((fp = fopen(filename, "rb")) == NULL) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1597 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1598 dmError("ILBM: Could not open file '%s' for reading.\n", filename); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1599 return DMERR_FOPEN; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1600 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1601 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1602 res = dmReadILBMImageFILE(fp, pimg); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1603 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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|
1604 fclose(fp); |
|
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|
1605 return res; |
|
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|
1606 } |
|
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|
1607 |
|
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|
1608 |
|
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Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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|
1609 |
|
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|
1610 |
| 435 | 1611 static int fmtProbePNG(const Uint8 *buf, const size_t len) |
| 1612 { | |
| 1613 if (len > 64 && buf[0] == 0x89 && | |
| 1614 buf[1] == 'P' && buf[2] == 'N' && buf[3] == 'G' && | |
| 1615 buf[4] == 0x0d && buf[5] == 0x0a) | |
|
443
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Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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|
1616 { |
|
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1617 if (buf[12] == 'I' && buf[13] == 'H' && |
|
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|
1618 buf[14] == 'D' && buf[15] == 'R') |
|
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1619 return DM_PROBE_SCORE_MAX; |
|
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|
1620 else |
|
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|
1621 return DM_PROBE_SCORE_GOOD; |
|
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|
1622 } |
| 435 | 1623 |
| 1624 return DM_PROBE_SCORE_FALSE; | |
| 1625 } | |
| 1626 | |
| 1627 | |
| 1628 static int fmtProbePCX(const Uint8 *buf, const size_t len) | |
| 1629 { | |
|
443
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|
1630 if (len > 128 + 32 && |
| 435 | 1631 buf[0] == 10 && |
|
443
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|
1632 (buf[1] == 5 || buf[1] == 2 || buf[1] == 3) && |
| 435 | 1633 buf[2] == 1 && |
|
443
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|
1634 (buf[3] == 8 || buf[3] == 4 || buf[3] == 3 || buf[3] == 1) && |
|
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|
1635 buf[65] >= 1 && buf[65] <= 4) |
| 435 | 1636 return DM_PROBE_SCORE_GOOD; |
| 1637 | |
| 1638 return DM_PROBE_SCORE_FALSE; | |
| 1639 } | |
| 1640 | |
| 1641 | |
|
443
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|
1642 static int fmtProbeILBM(const Uint8 *buf, const size_t len) |
|
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|
1643 { |
|
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|
1644 if (len > 32 && |
|
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|
1645 buf[ 0] == 'F' && buf[ 1] == 'O' && |
|
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|
1646 buf[ 2] == 'R' && buf[ 3] == 'M' && |
|
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|
1647 buf[ 8] == 'I' && buf[ 9] == 'L' && |
|
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|
1648 buf[10] == 'B' && buf[11] == 'M') |
|
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|
1649 { |
|
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Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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|
1650 if (buf[12] == 'B' && buf[13] == 'M' && |
|
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|
1651 buf[14] == 'H' && buf[15] == 'D') |
|
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|
1652 return DM_PROBE_SCORE_MAX; |
|
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Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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|
1653 else |
|
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|
1654 return DM_PROBE_SCORE_GOOD; |
|
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|
1655 } |
|
f7c9d1619c74
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|
1656 |
|
f7c9d1619c74
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|
1657 return DM_PROBE_SCORE_FALSE; |
|
f7c9d1619c74
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|
1658 } |
|
f7c9d1619c74
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|
1659 |
|
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|
1660 |
| 435 | 1661 DMImageFormat dmImageFormatList[IMGFMT_LAST] = |
| 1662 { | |
| 1663 { | |
| 1664 "PNG", "Portable Network Graphics", | |
| 1665 fmtProbePNG, | |
| 1666 #ifdef DM_USE_LIBPNG | |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
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452
diff
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|
1667 dmReadPNGImage, dmReadPNGImageFILE, |
| 435 | 1668 dmWritePNGImage, dmWritePNGImageFILE, |
| 1669 #else | |
| 1670 NULL, NULL, | |
|
453
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
1671 NULL, NULL, |
| 435 | 1672 #endif |
| 1673 }, | |
| 1674 { | |
| 1675 "PPM", "Portable PixMap", | |
| 1676 NULL, | |
| 1677 NULL, NULL, | |
| 1678 dmWritePPMImage, dmWritePPMImageFILE, | |
| 1679 }, | |
| 1680 { | |
| 1681 "PCX", "Z-Soft Paintbrush", | |
| 1682 fmtProbePCX, | |
| 1683 dmReadPCXImage, dmReadPCXImageFILE, | |
| 1684 dmWritePCXImage, dmWritePCXImageFILE, | |
| 1685 }, | |
| 1686 { | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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diff
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|
1687 "ILBM", "IFF ILBM", |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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|
1688 fmtProbeILBM, |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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diff
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|
1689 dmReadILBMImage, dmReadILBMImageFILE, |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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diff
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|
1690 NULL, NULL, |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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|
1691 }, |
|
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diff
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|
1692 { |
| 435 | 1693 "ARAW", "IFFMaster Amiga RAW", |
| 1694 NULL, | |
| 1695 NULL, NULL, | |
| 1696 dmWriteIFFMasterRAWImage, dmWriteIFFMasterRAWImageFILE, | |
| 1697 } | |
| 1698 }; | |
| 1699 | |
| 1700 | |
| 1701 int dmImageProbeGeneric(const Uint8 *buf, const size_t len, DMImageFormat **pfmt, int *index) | |
| 1702 { | |
| 1703 int i, scoreMax = DM_PROBE_SCORE_FALSE, scoreIndex = -1; | |
| 1704 | |
| 1705 for (i = 0; i < IMGFMT_LAST; i++) | |
| 1706 { | |
| 1707 DMImageFormat *fmt = &dmImageFormatList[i]; | |
|
442
a67600e186d0
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Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1708 if (fmt->probe != NULL) |
| 435 | 1709 { |
|
442
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Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1710 int score = fmt->probe(buf, len); |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1711 if (score > scoreMax) |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1712 { |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1713 scoreMax = score; |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1714 scoreIndex = i; |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1715 } |
| 435 | 1716 } |
| 1717 } | |
| 1718 | |
| 1719 if (scoreIndex >= 0) | |
| 1720 { | |
| 1721 *pfmt = &dmImageFormatList[scoreIndex]; | |
| 1722 *index = scoreIndex; | |
| 1723 return scoreMax; | |
| 1724 } | |
| 1725 else | |
| 1726 return DM_PROBE_SCORE_FALSE; | |
| 1727 } |