Mercurial > hg > dmlib
annotate libgfx.c @ 462:ab401a5087f9
Improve ARAW output.
| author | Matti Hamalainen <ccr@tnsp.org> |
|---|---|
| date | Sun, 04 Nov 2012 16:09:07 +0200 |
| parents | c7a3aacbd55e |
| children | 358776103ceb |
| 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, int ctransp) |
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52 { |
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53 int i; |
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54 |
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55 if (ppal == NULL) |
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56 return FALSE; |
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57 |
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58 // Allocate desired amount of palette |
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59 if ((*ppal = dmCalloc(ncolors, sizeof(DMColor))) == NULL) |
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60 return FALSE; |
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61 |
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62 // Set alpha values to max, except for transparent color |
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63 for (i = 0; i < ncolors; i++) |
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64 { |
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65 (*ppal)[i].a = (i == ctransp) ? 0 : 255; |
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66 } |
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67 |
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68 return TRUE; |
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69 } |
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70 |
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71 |
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72 BOOL dmImageAllocPalette(DMImage *img, int ncolors, int ctransp) |
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73 { |
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74 if (img == NULL) |
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75 return FALSE; |
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76 |
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77 img->ncolors = ncolors; |
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78 img->ctransp = ctransp; |
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79 return dmPaletteAlloc(&(img->pal), ncolors, ctransp); |
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80 } |
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81 |
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82 |
| 435 | 83 int dmImageGetBytesPerPixel(int format) |
| 84 { | |
| 85 switch (format) | |
| 86 { | |
| 87 case DM_IFMT_PALETTE : return 1; | |
| 88 | |
| 89 case DM_IFMT_RGB_PLANE : | |
| 90 case DM_IFMT_RGB : return 3; | |
| 91 | |
| 92 case DM_IFMT_RGBA : return 4; | |
| 93 | |
| 94 default: return 0; | |
| 95 } | |
| 96 } | |
| 97 | |
| 98 | |
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99 static BOOL dmReadPaletteData(FILE *fp, DMColor *pal, int ncolors) |
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100 { |
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101 int i; |
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102 |
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103 for (i = 0; i < ncolors; i++) |
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104 { |
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105 Uint8 colR, colG, colB; |
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106 if (!dm_fread_byte(fp, &colR) || |
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107 !dm_fread_byte(fp, &colG) || |
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108 !dm_fread_byte(fp, &colB)) |
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109 return FALSE; |
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110 |
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111 pal[i].r = colR; |
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112 pal[i].g = colG; |
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113 pal[i].b = colB; |
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114 } |
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115 |
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116 return TRUE; |
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117 } |
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118 |
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119 |
| 435 | 120 int dmWriteImageData(DMImage *img, void *cbdata, BOOL (*writeRowCB)(void *, Uint8 *, size_t), const DMImageSpec *spec) |
| 121 { | |
| 122 int x, y, yscale, xscale, res = 0, rowSize, rowWidth; | |
| 123 Uint8 *row = NULL; | |
| 124 | |
| 125 // Allocate memory for row buffer | |
| 126 rowWidth = img->width * spec->scale; | |
| 127 rowSize = rowWidth * dmImageGetBytesPerPixel(spec->format); | |
| 128 | |
| 129 if ((row = dmMalloc(rowSize + 16)) == NULL) | |
| 130 { | |
| 131 res = DMERR_MALLOC; | |
| 132 goto done; | |
| 133 } | |
| 134 | |
| 135 // Generate the image | |
| 136 for (y = 0; y < img->height; y++) | |
| 137 { | |
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436
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138 Uint8 *ptr1 = row, |
| 435 | 139 *ptr2 = ptr1 + rowWidth, |
| 140 *ptr3 = ptr2 + rowWidth; | |
| 141 | |
| 142 for (x = 0; x < img->width; x++) | |
| 143 { | |
| 144 Uint8 c = img->data[(y * img->pitch) + x], qr, qg, qb, qa; | |
| 145 switch (spec->format) | |
| 146 { | |
| 147 case DM_IFMT_PALETTE: | |
| 148 for (xscale = 0; xscale < spec->scale; xscale++) | |
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436
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149 *ptr1++ = c; |
| 435 | 150 break; |
| 151 | |
| 152 case DM_IFMT_RGBA: | |
| 153 qr = img->pal[c].r; | |
| 154 qg = img->pal[c].g; | |
| 155 qb = img->pal[c].b; | |
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156 qa = img->pal[c].a; |
| 435 | 157 |
| 158 for (xscale = 0; xscale < spec->scale; xscale++) | |
| 159 { | |
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436
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160 *ptr1++ = qr; |
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161 *ptr1++ = qg; |
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162 *ptr1++ = qb; |
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163 *ptr1++ = qa; |
| 435 | 164 } |
| 165 break; | |
| 166 | |
| 167 case DM_IFMT_RGB: | |
| 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 { | |
|
436
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174 *ptr1++ = qr; |
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parents:
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175 *ptr1++ = qg; |
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176 *ptr1++ = qb; |
| 435 | 177 } |
| 178 break; | |
| 179 | |
| 180 case DM_IFMT_RGB_PLANE: | |
| 181 qr = img->pal[c].r; | |
| 182 qg = img->pal[c].g; | |
| 183 qb = img->pal[c].b; | |
| 184 | |
| 185 for (xscale = 0; xscale < spec->scale; xscale++) | |
| 186 { | |
| 187 *ptr1++ = qr; | |
| 188 *ptr2++ = qg; | |
| 189 *ptr3++ = qb; | |
| 190 } | |
| 191 break; | |
| 192 } | |
| 193 } | |
| 194 | |
| 195 for (yscale = 0; yscale < spec->scale; yscale++) | |
| 196 { | |
| 197 if (!writeRowCB(cbdata, row, rowSize)) | |
| 198 { | |
| 199 res = DMERR_FWRITE; | |
| 200 goto done; | |
| 201 } | |
| 202 } | |
| 203 } | |
| 204 | |
| 205 done: | |
| 206 dmFree(row); | |
| 207 return res; | |
| 208 } | |
| 209 | |
| 210 | |
| 211 #define DMCOL(x) (((x) >> 4) & 0xf) | |
| 212 | |
| 462 | 213 int dmWriteIFFMasterRAWPalette(FILE *fp, DMImage *img, int ncolors, |
| 214 const char *indent, const char *type) | |
| 435 | 215 { |
| 216 int i; | |
| 217 | |
| 218 for (i = 0; i < ncolors; i++) | |
| 219 { | |
| 220 int color; | |
| 221 if (i < img->ncolors) | |
| 222 { | |
| 223 color = (DMCOL(img->pal[i].r) << 8) | | |
| 224 (DMCOL(img->pal[i].g) << 4) | | |
| 225 (DMCOL(img->pal[i].b)); | |
| 226 } | |
| 227 else | |
| 228 color = 0; | |
| 229 | |
| 462 | 230 fprintf(fp, "%s%s $%04X\n", |
| 231 indent != NULL ? indent : "\t", | |
| 232 type != NULL ? type : "dw.b", | |
| 233 color); | |
| 435 | 234 } |
| 235 | |
| 462 | 236 return DMERR_OK; |
| 435 | 237 } |
| 238 | |
| 239 | |
| 240 int dmWriteIFFMasterRAWImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 241 { | |
| 242 int xc, yc, plane, res; | |
| 243 DMBitStream bs; | |
| 244 | |
| 245 if ((res = dmInitBitStream(&bs, fp)) != DMERR_OK) | |
| 246 return res; | |
| 247 | |
| 248 if (spec->interleave) | |
| 249 { | |
| 250 // Output bitplanes in interleaved format (each plane of line sequentially) | |
| 251 for (yc = 0; yc < img->height; yc++) | |
| 252 { | |
| 253 for (plane = 0; plane < spec->nplanes; plane++) | |
| 254 { | |
| 255 Uint8 *sp = img->data + yc * img->pitch; | |
| 256 for (xc = 0; xc < img->width; xc++) | |
| 257 { | |
| 258 if (!dmPutBits(&bs, (sp[xc] & (1 << plane)) ? 1 : 0, 1)) | |
| 259 return DMERR_FWRITE; | |
| 260 } | |
| 261 } | |
| 262 } | |
| 263 } | |
| 264 else | |
| 265 { | |
| 266 // Output each bitplane in sequence | |
| 267 for (plane = 0; plane < spec->nplanes; plane++) | |
| 268 { | |
| 269 for (yc = 0; yc < img->height; yc++) | |
| 270 { | |
| 271 Uint8 *sp = img->data + yc * img->pitch; | |
| 272 for (xc = 0; xc < img->width; xc++) | |
| 273 { | |
| 274 if (!dmPutBits(&bs, (sp[xc] & (1 << plane)) ? 1 : 0, 1)) | |
| 275 return DMERR_FWRITE; | |
| 276 } | |
| 277 } | |
| 278 } | |
| 279 } | |
| 280 | |
| 281 return dmFlushBitStream(&bs); | |
| 282 } | |
| 283 | |
| 284 int dmWriteIFFMasterRAWImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 285 { | |
| 286 FILE *fp; | |
| 287 int res; | |
| 288 | |
| 289 if ((fp = fopen(filename, "wb")) == NULL) | |
| 290 { | |
| 291 dmError("IFFMasterRAW: Could not open file '%s' for writing.\n", filename); | |
| 292 return DMERR_FOPEN; | |
| 293 } | |
| 294 | |
| 295 res = dmWriteIFFMasterRAWImageFILE(fp, img, spec); | |
| 296 | |
| 297 fclose(fp); | |
| 298 return res; | |
| 299 } | |
| 300 | |
| 301 | |
| 302 static BOOL dmWritePPMRow(void *cbdata, Uint8 *row, size_t len) | |
| 303 { | |
| 304 return fwrite(row, sizeof(Uint8), len, (FILE *) cbdata) == len; | |
| 305 } | |
| 306 | |
| 307 | |
| 308 int dmWritePPMImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 309 { | |
| 310 // Write PPM header | |
| 311 fprintf(fp, | |
| 312 "P6\n%d %d\n255\n", | |
| 313 img->width * spec->scale, | |
| 314 img->height * spec->scale); | |
| 315 | |
| 316 // Write image data | |
| 317 spec->format = DM_IFMT_RGB; | |
| 318 return dmWriteImageData(img, (void *) fp, dmWritePPMRow, spec); | |
| 319 } | |
| 320 | |
| 321 | |
| 322 int dmWritePPMImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 323 { | |
| 324 FILE *fp; | |
| 325 int res; | |
| 326 | |
| 327 // Create output file | |
| 328 if ((fp = fopen(filename, "wb")) == NULL) | |
| 329 { | |
| 330 dmError("PPM: could not open file '%s' for writing.\n", filename); | |
| 331 return DMERR_FOPEN; | |
| 332 } | |
| 333 | |
| 334 res = dmWritePPMImageFILE(fp, img, spec); | |
| 335 | |
| 336 fclose(fp); | |
| 337 return res; | |
| 338 } | |
| 339 | |
| 340 | |
| 341 #ifdef DM_USE_LIBPNG | |
| 342 static BOOL dmWritePNGRow(void *cbdata, Uint8 *row, size_t len) | |
| 343 { | |
| 344 png_structp png_ptr = cbdata; | |
| 345 (void) len; | |
| 346 | |
| 347 if (setjmp(png_jmpbuf(png_ptr))) | |
| 348 return FALSE; | |
| 349 | |
| 350 png_write_row(png_ptr, row); | |
| 351 | |
| 352 return TRUE; | |
| 353 } | |
| 354 | |
| 355 | |
| 356 int dmWritePNGImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 357 { | |
| 358 png_structp png_ptr = NULL; | |
| 359 png_infop info_ptr = NULL; | |
| 360 png_colorp palette = NULL; | |
| 361 int fmt, res = DMERR_OK; | |
| 362 | |
| 363 // Create PNG structures | |
| 364 png_ptr = png_create_write_struct( | |
| 365 PNG_LIBPNG_VER_STRING, | |
| 366 NULL, NULL, NULL); | |
| 367 | |
| 368 if (png_ptr == NULL) | |
| 369 { | |
| 370 dmError("PNG: png_create_write_struct() failed.\n"); | |
| 371 res = DMERR_MALLOC; | |
| 372 goto error; | |
| 373 } | |
| 374 | |
| 375 info_ptr = png_create_info_struct(png_ptr); | |
| 376 if (info_ptr == NULL) | |
| 377 { | |
| 378 dmError("PNG: png_create_info_struct(%p) failed.\n", png_ptr); | |
| 379 res = DMERR_INIT_FAIL; | |
| 380 goto error; | |
| 381 } | |
| 382 | |
| 383 if (setjmp(png_jmpbuf(png_ptr))) | |
| 384 { | |
| 385 dmError("PNG: Error during image writing..\n"); | |
| 386 res = DMERR_INIT_FAIL; | |
| 387 goto error; | |
| 388 } | |
| 389 | |
| 390 png_init_io(png_ptr, fp); | |
| 391 | |
| 392 // Write PNG header info | |
| 393 switch (spec->format) | |
| 394 { | |
| 395 case DM_IFMT_PALETTE: fmt = PNG_COLOR_TYPE_PALETTE; break; | |
| 396 case DM_IFMT_RGB : fmt = PNG_COLOR_TYPE_RGB; break; | |
| 397 case DM_IFMT_RGBA : fmt = PNG_COLOR_TYPE_RGB_ALPHA; break; | |
| 398 default: | |
|
452
d1f7ddc84c7c
Return more sensible error values where appropriate instead of just
Matti Hamalainen <ccr@tnsp.org>
parents:
451
diff
changeset
|
399 dmError("PNG: Unsupported image format %d.\n", spec->format); |
|
d1f7ddc84c7c
Return more sensible error values where appropriate instead of just
Matti Hamalainen <ccr@tnsp.org>
parents:
451
diff
changeset
|
400 res = DMERR_NOT_SUPPORTED; |
| 435 | 401 goto error; |
| 402 } | |
| 403 | |
| 404 png_set_IHDR(png_ptr, info_ptr, | |
| 405 img->width * spec->scale, | |
| 406 img->height * spec->scale, | |
| 407 8, /* bits per component */ | |
| 408 fmt, | |
| 409 PNG_INTERLACE_NONE, | |
| 410 PNG_COMPRESSION_TYPE_DEFAULT, | |
| 411 PNG_FILTER_TYPE_DEFAULT); | |
| 412 | |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
413 dmMsg(2, "PNG: %d x %d, depth=%d, type=%d\n", |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
414 img->width * spec->scale, |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
415 img->height * spec->scale, |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
416 8, fmt); |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
417 |
| 435 | 418 // Palette |
| 419 if (spec->format == DM_IFMT_PALETTE) | |
| 420 { | |
| 421 int i; | |
| 422 | |
| 423 palette = png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH * sizeof(png_color)); | |
| 424 if (palette == NULL) | |
| 425 { | |
| 426 dmError("PNG: Could not allocate palette structure."); | |
|
452
d1f7ddc84c7c
Return more sensible error values where appropriate instead of just
Matti Hamalainen <ccr@tnsp.org>
parents:
451
diff
changeset
|
427 res = DMERR_MALLOC; |
| 435 | 428 goto error; |
| 429 } | |
| 430 | |
| 431 memset(palette, 0, PNG_MAX_PALETTE_LENGTH * sizeof(png_color)); | |
| 432 | |
| 433 for (i = 0; i < img->ncolors; i++) | |
| 434 { | |
| 435 palette[i].red = img->pal[i].r; | |
| 436 palette[i].green = img->pal[i].g; | |
| 437 palette[i].blue = img->pal[i].b; | |
| 438 } | |
| 439 | |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
440 png_set_PLTE(png_ptr, info_ptr, palette, img->ncolors); |
| 435 | 441 } |
| 442 | |
| 443 // png_set_gAMA(png_ptr, info_ptr, 2.2); | |
| 444 | |
| 445 png_write_info(png_ptr, info_ptr); | |
| 446 | |
| 447 | |
| 448 // Write compressed image data | |
| 449 dmWriteImageData(img, (void *) png_ptr, dmWritePNGRow, spec); | |
| 450 | |
| 451 // Write footer | |
| 452 png_write_end(png_ptr, NULL); | |
| 453 | |
| 454 error: | |
| 455 png_free(png_ptr, palette); | |
| 456 palette = NULL; | |
| 457 | |
| 458 if (png_ptr && info_ptr) | |
| 459 png_destroy_write_struct(&png_ptr, &info_ptr); | |
| 460 | |
| 461 return res; | |
| 462 } | |
| 463 | |
| 464 | |
| 465 int dmWritePNGImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 466 { | |
| 467 int res; | |
| 468 FILE *fp; | |
| 469 | |
| 470 if ((fp = fopen(filename, "wb")) == NULL) | |
| 471 { | |
| 472 dmError("PNG: could not open file '%s' for writing.\n", filename); | |
| 473 return DMERR_FOPEN; | |
| 474 } | |
| 475 | |
| 476 res = dmWritePNGImageFILE(fp, img, spec); | |
| 477 | |
| 478 fclose(fp); | |
| 479 return res; | |
| 480 } | |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
481 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
482 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
483 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
|
484 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
485 png_structp png_ptr = NULL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
486 png_infop info_ptr = NULL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
487 png_colorp palette = NULL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
488 png_bytep *row_pointers = NULL; |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
489 png_bytep trans = NULL; |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
490 png_uint_32 width, height; |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
491 int i, bit_depth, color_type, ncolors, ntrans; |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
492 int res = DMERR_OK; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
493 DMImage *img; |
|
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 // Create PNG structures |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
496 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
|
497 PNG_LIBPNG_VER_STRING, |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
498 NULL, NULL, NULL); |
|
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 (png_ptr == NULL) |
|
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: 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
|
503 res = DMERR_MALLOC; |
|
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 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
|
508 if (info_ptr == NULL) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
509 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
510 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
|
511 res = DMERR_INIT_FAIL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
512 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
513 } |
|
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 (setjmp(png_jmpbuf(png_ptr))) |
|
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: Error during image reading..\n"); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
518 res = DMERR_INIT_FAIL; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
519 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
520 } |
|
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 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
|
523 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
524 // Read image information |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
525 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
|
526 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
527 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
|
528 &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
|
529 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
530 if (width < 1 || height < 1) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
531 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
532 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
|
533 width, height); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
534 res = DMERR_INVALID_DATA; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
535 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
536 } |
|
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 switch (color_type) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
539 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
540 case PNG_COLOR_TYPE_GRAY: |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
541 if (bit_depth < 8) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
542 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
|
543 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
544 if (bit_depth > 8) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
545 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
546 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
|
547 bit_depth); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
548 res = DMERR_NOT_SUPPORTED; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
549 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
550 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
551 break; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
552 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
553 case PNG_COLOR_TYPE_PALETTE: |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
554 png_set_packing(png_ptr); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
555 break; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
556 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
557 default: |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
558 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
|
559 res = DMERR_NOT_SUPPORTED; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
560 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
561 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
562 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
563 // Allocate image |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
564 dmMsg(2, "PNG: %d x %d, depth=%d, type=%d\n", |
|
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Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
565 width, height, bit_depth, color_type); |
|
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
566 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
567 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
|
568 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
569 dmError("PNG: Could not allocate image data.\n"); |
|
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Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
570 res = DMERR_MALLOC; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
571 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
572 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
573 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
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diff
changeset
|
574 // ... |
|
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Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
575 row_pointers = png_malloc(png_ptr, height * sizeof(png_bytep)); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
576 for (i = 0; i < img->height; i++) |
|
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diff
changeset
|
577 row_pointers[i] = img->data + (i * img->pitch); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
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diff
changeset
|
578 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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diff
changeset
|
579 png_read_image(png_ptr, row_pointers); |
|
349a2ff11531
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parents:
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diff
changeset
|
580 |
|
349a2ff11531
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parents:
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diff
changeset
|
581 png_read_end(png_ptr, NULL); |
|
349a2ff11531
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parents:
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diff
changeset
|
582 |
|
349a2ff11531
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parents:
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diff
changeset
|
583 // Create palette |
|
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diff
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|
584 switch (color_type) |
|
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parents:
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changeset
|
585 { |
|
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|
586 case PNG_COLOR_TYPE_GRAY: |
|
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diff
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|
587 ncolors = 256; |
|
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Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
588 dmMsg(2, "PNG: Generating %d color grayscale palette.\n", ncolors); |
|
349a2ff11531
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diff
changeset
|
589 |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
590 if (!dmImageAllocPalette(img, ncolors, -1)) |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
591 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
592 res = DMERR_MALLOC; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
593 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
594 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
595 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
596 for (i = 0; i < img->ncolors; i++) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
597 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
598 img->pal[i].r = img->pal[i].g = img->pal[i].b = i; |
|
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
599 } |
|
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
600 break; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
601 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
602 case PNG_COLOR_TYPE_PALETTE: |
|
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
603 png_get_PLTE(png_ptr, info_ptr, &palette, &ncolors); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
604 dmMsg(2, "PNG: Palette of %d colors found.\n", ncolors); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
605 if (ncolors <= 0) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
606 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
607 |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
608 if (!dmImageAllocPalette(img, ncolors, -1)) |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
609 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
610 res = DMERR_MALLOC; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
611 goto error; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
612 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
613 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
614 for (i = 0; i < img->ncolors; i++) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
615 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
616 img->pal[i].r = palette[i].red; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
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diff
changeset
|
617 img->pal[i].g = palette[i].green; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
618 img->pal[i].b = palette[i].blue; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
619 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
620 break; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
621 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
622 |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
623 if (color_type == PNG_COLOR_TYPE_PALETTE || |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
624 color_type == PNG_COLOR_TYPE_GRAY) |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
625 { |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
626 png_get_tRNS(png_ptr, info_ptr, &trans, &ntrans, NULL); |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
627 for (i = 0; i < img->ncolors && i < ntrans; i++) |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
628 { |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
629 img->pal[i].a = trans[i]; |
|
461
c7a3aacbd55e
Implement transparent color in IFF ILBM reader and ctransp setting in PNG reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
460
diff
changeset
|
630 if (img->ctransp < 0 && trans[i] == 0) |
|
c7a3aacbd55e
Implement transparent color in IFF ILBM reader and ctransp setting in PNG reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
460
diff
changeset
|
631 img->ctransp = i; |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
632 } |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
633 } |
|
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
634 |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
635 error: |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
636 // png_free(png_ptr, palette); |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
637 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
638 if (png_ptr && info_ptr) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
639 png_destroy_read_struct(&png_ptr, &info_ptr, NULL); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
640 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
641 return res; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
642 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
643 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
644 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
645 int dmReadPNGImage(const char *filename, DMImage **img) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
646 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
647 int res; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
648 FILE *fp; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
649 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
650 if ((fp = fopen(filename, "rb")) == NULL) |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
651 { |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
652 dmError("PNG: Could not open file '%s' for reading.\n", filename); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
653 return DMERR_FOPEN; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
654 } |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
655 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
656 res = dmReadPNGImageFILE(fp, img); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
657 |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
658 fclose(fp); |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
659 return res; |
|
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
660 } |
| 435 | 661 #endif |
| 662 | |
| 663 | |
| 664 typedef struct | |
| 665 { | |
| 666 Uint8 r,g,b; | |
| 667 } DMPCXColor; | |
| 668 | |
| 669 | |
| 670 typedef struct | |
| 671 { | |
| 672 Uint8 manufacturer, | |
| 673 version, | |
| 674 encoding, | |
| 675 bpp; | |
| 676 Uint16 xmin, ymin, xmax, ymax; | |
| 677 Uint16 hres, vres; | |
| 678 DMPCXColor colormap[16]; | |
| 679 Uint8 reserved; | |
| 680 Uint8 nplanes; | |
| 681 Uint16 bpl; | |
| 682 Uint16 palinfo; | |
| 683 Uint8 filler[58]; | |
| 684 } DMPCXHeader; | |
| 685 | |
| 686 | |
| 687 typedef struct | |
| 688 { | |
| 689 DMPCXHeader *header; | |
| 690 Uint8 *buf; | |
| 691 size_t bufLen, bufOffs; | |
| 692 int format; | |
| 693 FILE *fp; | |
| 694 } DMPCXData; | |
| 695 | |
| 696 | |
| 697 static inline Uint8 dmPCXGetByte(Uint8 *row, const size_t len, const size_t soffs) | |
| 698 { | |
| 699 return (soffs < len) ? row[soffs] : 0; | |
| 700 } | |
| 701 | |
| 702 static BOOL dmPCXFlush(DMPCXData *pcx) | |
| 703 { | |
| 704 BOOL ret = TRUE; | |
| 705 if (pcx->bufOffs > 0) | |
| 706 ret = fwrite(pcx->buf, sizeof(Uint8), pcx->bufOffs, pcx->fp) == pcx->bufOffs; | |
| 707 pcx->bufOffs = 0; | |
| 708 return ret; | |
| 709 } | |
| 710 | |
| 711 static inline BOOL dmPCXPutByte(DMPCXData *pcx, const Uint8 val) | |
| 712 { | |
| 713 if (pcx->bufOffs < pcx->bufLen) | |
| 714 { | |
| 715 pcx->buf[pcx->bufOffs++] = val; | |
| 716 return TRUE; | |
| 717 } | |
| 718 else | |
| 719 return dmPCXFlush(pcx); | |
| 720 } | |
| 721 | |
| 722 static BOOL dmWritePCXRow(void *cbdata, Uint8 *row, size_t len) | |
| 723 { | |
| 724 DMPCXData *pcx = (DMPCXData *) cbdata; | |
| 725 int plane; | |
| 726 size_t soffs = 0; | |
| 727 | |
| 728 // fprintf(stderr, "%d, %d * %d = %d\n", len, pcx->header->bpl, pcx->header->nplanes, pcx->header->nplanes * pcx->header->bpl); | |
| 729 | |
| 730 pcx->bufOffs = 0; | |
| 731 | |
| 732 for (plane = 0; plane < pcx->header->nplanes; plane++) | |
| 733 { | |
| 734 Uint8 data = dmPCXGetByte(row, len, soffs++), | |
| 735 count = 1; | |
| 736 | |
| 737 // size_t blen = pcx->header->bpl * pcx->header->nplanes; | |
| 738 size_t blen = pcx->header->bpl; | |
| 739 while (soffs < blen) | |
| 740 { | |
| 741 if (data == dmPCXGetByte(row, len, soffs) && count < 63) | |
| 742 { | |
| 743 count++; | |
| 744 soffs++; | |
| 745 } | |
| 746 else | |
| 747 { | |
| 748 if (count == 1 && (data & 0xC0) != 0xC0) | |
| 749 { | |
| 750 if (!dmPCXPutByte(pcx, data)) | |
| 751 return FALSE; | |
| 752 } | |
| 753 else | |
| 754 { | |
| 755 if (!dmPCXPutByte(pcx, 0xC0 | count) || | |
| 756 !dmPCXPutByte(pcx, data)) | |
| 757 return FALSE; | |
| 758 } | |
| 759 | |
| 760 data = dmPCXGetByte(row, len, soffs++); | |
| 761 count = 1; | |
| 762 } | |
| 763 } | |
| 764 | |
| 765 if (count > 1) | |
| 766 { | |
| 767 if (!dmPCXPutByte(pcx, 0xC0 | count) || | |
| 768 !dmPCXPutByte(pcx, data)) | |
| 769 return FALSE; | |
| 770 } | |
| 771 | |
| 772 if (!dmPCXFlush(pcx)) | |
| 773 return FALSE; | |
| 774 } | |
| 775 | |
| 776 | |
| 777 return TRUE; | |
| 778 } | |
| 779 | |
| 780 | |
| 781 int dmWritePCXImageFILE(FILE *fp, DMImage *img, DMImageSpec *spec) | |
| 782 { | |
| 783 DMPCXData pcx; | |
| 784 DMPCXHeader hdr; | |
| 785 int res; | |
| 786 | |
| 787 // Create output file | |
| 788 pcx.buf = NULL; | |
| 789 pcx.format = spec->paletted ? DM_IFMT_PALETTE : DM_IFMT_RGB_PLANE; | |
| 790 pcx.header = &hdr; | |
| 791 pcx.fp = fp; | |
| 792 | |
| 793 // Create PCX header | |
| 794 memset(&hdr, 0, sizeof(hdr)); | |
| 795 if (spec->paletted) | |
| 796 { | |
| 797 int i; | |
| 798 for (i = 0; i < (img->ncolors > 16 ? 16 : img->ncolors); i++) | |
| 799 { | |
| 800 hdr.colormap[i].r = img->pal[i].r; | |
| 801 hdr.colormap[i].g = img->pal[i].g; | |
| 802 hdr.colormap[i].b = img->pal[i].b; | |
| 803 } | |
| 804 } | |
| 805 hdr.manufacturer = 10; | |
| 806 hdr.version = 5; | |
| 807 hdr.encoding = 1; | |
| 808 hdr.bpp = 8; | |
| 809 hdr.hres = img->width * spec->scale; | |
| 810 hdr.vres = img->height * spec->scale; | |
| 811 hdr.xmin = hdr.ymin = 0; | |
| 812 hdr.xmax = hdr.hres - 1; | |
| 813 hdr.ymax = hdr.vres - 1; | |
| 814 hdr.nplanes = dmImageGetBytesPerPixel(pcx.format); | |
| 815 hdr.palinfo = 1; | |
| 816 | |
| 817 res = (img->width * spec->scale); | |
| 818 hdr.bpl = res / 2; | |
| 819 if (res % 2) hdr.bpl++; | |
| 820 hdr.bpl *= 2; | |
| 821 | |
| 822 dmMsg(2, "PCX: paletted=%d, nplanes=%d, bpp=%d, bpl=%d\n", | |
| 823 spec->paletted, hdr.nplanes, hdr.bpp, hdr.bpl); | |
| 824 | |
| 825 pcx.bufLen = hdr.bpl * 4; | |
| 826 if ((pcx.buf = dmMalloc(pcx.bufLen)) == NULL) | |
| 827 { | |
| 828 dmError("PCX: Could not allocate %d bytes for RLE compression buffer.\n", | |
| 829 pcx.bufLen); | |
| 830 res = DMERR_MALLOC; | |
| 831 goto error; | |
| 832 } | |
| 833 | |
| 834 // Write PCX header | |
| 835 if (!dm_fwrite_byte(pcx.fp, hdr.manufacturer) || | |
| 836 !dm_fwrite_byte(pcx.fp, hdr.version) || | |
| 837 !dm_fwrite_byte(pcx.fp, hdr.encoding) || | |
| 838 !dm_fwrite_byte(pcx.fp, hdr.bpp)) | |
| 839 { | |
| 840 dmError("PCX: Could not write basic header data.\n"); | |
| 841 res = DMERR_FWRITE; | |
| 842 goto error; | |
| 843 } | |
| 844 | |
| 845 if (!dm_fwrite_le16(pcx.fp, hdr.xmin) || | |
| 846 !dm_fwrite_le16(pcx.fp, hdr.ymin) || | |
| 847 !dm_fwrite_le16(pcx.fp, hdr.xmax) || | |
| 848 !dm_fwrite_le16(pcx.fp, hdr.ymax) || | |
| 849 !dm_fwrite_le16(pcx.fp, hdr.hres) || | |
| 850 !dm_fwrite_le16(pcx.fp, hdr.vres)) | |
| 851 { | |
| 852 dmError("PCX: Could not write image dimensions.\n"); | |
| 853 res = DMERR_FWRITE; | |
| 854 goto error; | |
| 855 } | |
| 856 | |
| 857 if (!dm_fwrite_str(pcx.fp, (Uint8 *) &hdr.colormap, sizeof(hdr.colormap))) | |
| 858 { | |
| 859 dmError("PCX: Could not write colormap.\n"); | |
| 860 res = DMERR_FWRITE; | |
| 861 goto error; | |
| 862 } | |
| 863 | |
| 864 if (!dm_fwrite_byte(pcx.fp, hdr.reserved) || | |
| 865 !dm_fwrite_byte(pcx.fp, hdr.nplanes) || | |
| 866 !dm_fwrite_le16(pcx.fp, hdr.bpl) || | |
| 867 !dm_fwrite_le16(pcx.fp, hdr.palinfo) || | |
| 868 !dm_fwrite_str(pcx.fp, (Uint8 *) &hdr.filler, sizeof(hdr.filler))) | |
| 869 { | |
| 870 dmError("PCX: Could not write header remainder.\n"); | |
| 871 res = DMERR_FWRITE; | |
| 872 goto error; | |
| 873 } | |
| 874 | |
| 875 // Write image data | |
| 876 res = dmWriteImageData(img, (void *) &pcx, dmWritePCXRow, spec); | |
| 877 | |
| 878 // Write VGA palette | |
| 879 if (spec->paletted) | |
| 880 { | |
| 881 int i; | |
| 882 dm_fwrite_byte(pcx.fp, 0x0C); | |
| 883 dmMsg(2, "PCX: Writing palette of %d active entries.\n", img->ncolors); | |
| 884 | |
| 885 for (i = 0; i < img->ncolors; i++) | |
| 886 { | |
| 887 dm_fwrite_byte(pcx.fp, img->pal[i].r); | |
| 888 dm_fwrite_byte(pcx.fp, img->pal[i].g); | |
| 889 dm_fwrite_byte(pcx.fp, img->pal[i].b); | |
| 890 } | |
| 891 | |
| 892 // Pad the palette, if necessary | |
| 893 for (; i < 256; i++) | |
| 894 { | |
| 895 dm_fwrite_byte(pcx.fp, 0); | |
| 896 dm_fwrite_byte(pcx.fp, 0); | |
| 897 dm_fwrite_byte(pcx.fp, 0); | |
| 898 } | |
| 899 } | |
| 900 | |
| 901 error: | |
| 902 dmFree(pcx.buf); | |
| 903 return res; | |
| 904 } | |
| 905 | |
| 906 | |
| 907 int dmWritePCXImage(const char *filename, DMImage *img, DMImageSpec *spec) | |
| 908 { | |
| 909 FILE *fp; | |
| 910 int res; | |
| 911 | |
| 912 if ((fp = fopen(filename, "wb")) == NULL) | |
| 913 { | |
| 914 dmError("PCX: Could not open file '%s' for writing.\n", filename); | |
| 915 return DMERR_FOPEN; | |
| 916 } | |
| 917 | |
| 918 res = dmWritePCXImageFILE(fp, img, spec); | |
| 919 | |
| 920 fclose(fp); | |
| 921 return res; | |
| 922 } | |
| 923 | |
| 924 | |
| 925 static BOOL dmPCXDecodeRLERow(FILE *fp, Uint8 *buf, const size_t bufLen) | |
| 926 { | |
| 927 size_t offs = 0; | |
| 928 do | |
| 929 { | |
| 930 int count; | |
| 931 Uint8 data; | |
| 932 | |
| 933 if (!dm_fread_byte(fp, &data)) | |
| 934 return FALSE; | |
| 935 | |
| 936 if ((data & 0xC0) == 0xC0) | |
| 937 { | |
| 938 count = data & 0x3F; | |
| 939 if (!dm_fread_byte(fp, &data)) | |
| 940 return FALSE; | |
| 941 } | |
| 942 else | |
| 943 count = 1; | |
| 944 | |
| 945 while (count-- && offs < bufLen) | |
| 946 buf[offs++] = data; | |
| 947 | |
| 948 } while (offs < bufLen); | |
| 949 | |
| 950 return TRUE; | |
| 951 } | |
| 952 | |
| 953 | |
| 954 int dmReadPCXImageFILE(FILE *fp, DMImage **pimg) | |
| 955 { | |
| 956 DMImage *img; | |
| 957 DMPCXData pcx; | |
| 958 DMPCXHeader hdr; | |
| 959 BOOL paletted; | |
| 960 int res = 0, yc, xc; | |
| 961 Uint8 *dp; | |
| 962 | |
| 963 pcx.buf = NULL; | |
| 964 | |
| 965 // Read PCX header | |
| 966 if (!dm_fread_byte(fp, &hdr.manufacturer) || | |
| 967 !dm_fread_byte(fp, &hdr.version) || | |
| 968 !dm_fread_byte(fp, &hdr.encoding) || | |
| 969 !dm_fread_byte(fp, &hdr.bpp)) | |
| 970 { | |
| 971 dmError("PCX: Could not read basic header data.\n"); | |
| 972 res = DMERR_FREAD; | |
| 973 goto error; | |
| 974 } | |
| 975 | |
| 976 if (hdr.manufacturer != 10 || | |
| 977 hdr.version != 5 || | |
| 978 hdr.encoding != 1 || | |
| 979 hdr.bpp != 8) | |
| 980 { | |
| 981 dmError("PCX: Not a PCX file, or unsupported variant.\n"); | |
| 982 res = DMERR_FREAD; | |
| 983 goto error; | |
| 984 } | |
| 985 | |
| 986 if (!dm_fread_le16(fp, &hdr.xmin) || | |
| 987 !dm_fread_le16(fp, &hdr.ymin) || | |
| 988 !dm_fread_le16(fp, &hdr.xmax) || | |
| 989 !dm_fread_le16(fp, &hdr.ymax) || | |
| 990 !dm_fread_le16(fp, &hdr.hres) || | |
| 991 !dm_fread_le16(fp, &hdr.vres)) | |
| 992 { | |
| 993 dmError("PCX: Could not read image dimensions.\n"); | |
| 994 res = DMERR_FREAD; | |
| 995 goto error; | |
| 996 } | |
| 997 | |
| 998 if (!dm_fread_str(fp, (Uint8 *) &hdr.colormap, sizeof(hdr.colormap))) | |
| 999 { | |
| 1000 dmError("PCX: Could not read colormap.\n"); | |
| 1001 res = DMERR_FREAD; | |
| 1002 goto error; | |
| 1003 } | |
| 1004 | |
| 1005 if (!dm_fread_byte(fp, &hdr.reserved) || | |
| 1006 !dm_fread_byte(fp, &hdr.nplanes) || | |
| 1007 !dm_fread_le16(fp, &hdr.bpl) || | |
| 1008 !dm_fread_le16(fp, &hdr.palinfo) || | |
| 1009 !dm_fread_str(fp, (Uint8 *) &hdr.filler, sizeof(hdr.filler))) | |
| 1010 { | |
| 1011 dmError("PCX: Could not read header remainder.\n"); | |
| 1012 res = DMERR_FREAD; | |
| 1013 goto error; | |
| 1014 } | |
| 1015 | |
| 1016 if (hdr.nplanes != 3 && hdr.nplanes != 1) | |
| 1017 { | |
| 1018 dmError("PCX: Unsupported number of bitplanes %d.\n", hdr.nplanes); | |
| 1019 res = DMERR_FREAD; | |
| 1020 goto error; | |
| 1021 } | |
| 1022 | |
| 1023 // Allocate image | |
| 1024 if ((*pimg = img = dmImageAlloc(hdr.xmax - hdr.xmin + 1, hdr.ymax - hdr.ymin + 1)) == NULL) | |
| 1025 { | |
| 1026 dmError("PCX: Could not allocate image structure.\n"); | |
| 1027 res = DMERR_MALLOC; | |
| 1028 goto error; | |
| 1029 } | |
| 1030 | |
| 1031 paletted = hdr.nplanes == 1; | |
| 1032 pcx.bufLen = hdr.nplanes * hdr.bpl; | |
| 1033 if ((pcx.buf = dmMalloc(pcx.bufLen)) == NULL) | |
| 1034 { | |
| 1035 dmError("PCX: Could not allocate RLE buffer.\n"); | |
| 1036 res = DMERR_MALLOC; | |
| 1037 goto error; | |
| 1038 } | |
| 1039 | |
| 1040 // Read image data | |
| 1041 dp = img->data; | |
| 1042 for (yc = 0; yc < img->height; yc++) | |
| 1043 { | |
| 1044 // Decode row of RLE'd data | |
| 1045 if (!dmPCXDecodeRLERow(fp, pcx.buf, pcx.bufLen)) | |
| 1046 { | |
| 1047 dmError("PCX: Error decoding RLE data.\n"); | |
| 1048 res = DMERR_INVALID_DATA; | |
| 1049 goto error; | |
| 1050 } | |
| 1051 | |
| 1052 // Decode bitplanes | |
| 1053 switch (hdr.nplanes) | |
| 1054 { | |
| 1055 case 1: | |
| 1056 memcpy(dp, pcx.buf, img->width); | |
| 1057 break; | |
| 1058 | |
| 1059 case 3: | |
| 1060 { | |
| 1061 Uint8 *dptr = dp, | |
| 1062 *sptr1 = pcx.buf, | |
| 1063 *sptr2 = sptr1 + hdr.bpl, | |
| 1064 *sptr3 = sptr2 + hdr.bpl; | |
| 1065 | |
| 1066 for (xc = 0; xc < img->width; xc++) | |
| 1067 { | |
| 1068 *dptr++ = *sptr1++; | |
| 1069 *dptr++ = *sptr2++; | |
| 1070 *dptr++ = *sptr3++; | |
| 1071 } | |
| 1072 } | |
| 1073 break; | |
| 1074 } | |
| 1075 | |
| 1076 dp += img->pitch; | |
| 1077 } | |
| 1078 | |
| 1079 // Read VGA palette | |
| 1080 if (paletted) | |
| 1081 { | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1082 int i, ncolors; |
| 435 | 1083 Uint8 tmpb; |
| 1084 BOOL read; | |
| 1085 | |
| 1086 if (!dm_fread_byte(fp, &tmpb) || tmpb != 0x0C) | |
| 1087 { | |
| 1088 read = FALSE; | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1089 ncolors = 16; |
| 435 | 1090 } |
| 1091 else | |
| 1092 { | |
| 1093 read = TRUE; | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1094 ncolors = 256; |
| 435 | 1095 } |
| 1096 | |
|
460
0af039b6c0ae
Improve transparent color handling.
Matti Hamalainen <ccr@tnsp.org>
parents:
453
diff
changeset
|
1097 if (!dmImageAllocPalette(img, ncolors, -1)) |
| 435 | 1098 { |
| 1099 dmError("PCX: Could not allocate palette data!\n"); | |
| 1100 res = DMERR_MALLOC; | |
| 1101 goto error; | |
| 1102 } | |
| 1103 | |
| 1104 if (read) | |
| 1105 { | |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1106 if (!dmReadPaletteData(fp, img->pal, ncolors)) |
| 435 | 1107 { |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1108 dmError("PCX: Error reading palette.\n"); |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1109 return DMERR_FREAD; |
| 435 | 1110 } |
| 1111 } | |
| 1112 else | |
| 1113 { | |
| 1114 for (i = 0; i < img->ncolors; i++) | |
| 1115 { | |
| 1116 if (i < 16) | |
| 1117 { | |
| 1118 img->pal[i].r = hdr.colormap[i].r; | |
| 1119 img->pal[i].g = hdr.colormap[i].g; | |
| 1120 img->pal[i].b = hdr.colormap[i].b; | |
| 1121 } | |
| 1122 } | |
| 1123 } | |
| 1124 } | |
| 1125 | |
| 1126 error: | |
| 1127 dmFree(pcx.buf); | |
| 1128 return res; | |
| 1129 } | |
| 1130 | |
| 1131 | |
| 1132 int dmReadPCXImage(const char *filename, DMImage **pimg) | |
| 1133 { | |
| 1134 FILE *fp; | |
| 1135 int res; | |
| 1136 | |
| 1137 if ((fp = fopen(filename, "rb")) == NULL) | |
| 1138 { | |
| 1139 dmError("PCX: Could not open file '%s' for reading.\n", filename); | |
| 1140 return -15; | |
| 1141 } | |
| 1142 | |
| 1143 res = dmReadPCXImageFILE(fp, pimg); | |
| 1144 | |
| 1145 fclose(fp); | |
| 1146 return res; | |
| 1147 } | |
| 1148 | |
| 1149 | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1150 #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
|
1151 #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
|
1152 #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
|
1153 #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
|
1154 #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
|
1155 #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
|
1156 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1157 #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
|
1158 #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
|
1159 #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
|
1160 #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
|
1161 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1162 #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
|
1163 #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
|
1164 |
|
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
|
1165 #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
|
1166 #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
|
1167 #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
|
1168 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1169 typedef struct |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1170 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1171 Uint32 id; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1172 Uint32 size; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1173 int count; |
| 445 | 1174 char str[6]; |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1175 } DMIFFChunk; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1176 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1177 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1178 typedef struct |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1179 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1180 Uint16 w, h; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1181 Sint16 x, y; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1182 Uint8 nplanes; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1183 Uint8 masking; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1184 Uint8 compression; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1185 Uint8 pad1; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1186 Uint16 transp; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1187 Uint8 xasp, yasp; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1188 Sint16 pagew, pageh; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1189 } DMIFFBMHD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1190 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1191 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1192 typedef struct |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1193 { |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1194 DMIFFChunk chBMHD, chCMAP, chBODY; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1195 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
|
1196 Uint32 camg; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1197 int ncolors; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1198 DMColor *pal; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1199 BOOL paletted; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1200 } DMIFF; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1201 |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1202 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1203 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
|
1204 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1205 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
|
1206 !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
|
1207 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1208 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>
parents:
442
diff
changeset
|
1209 return FALSE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1210 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1211 else |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1212 return TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1213 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1214 |
| 445 | 1215 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
|
1216 { |
| 445 | 1217 chunk->str[0] = (chunk->id >> 24) & 0xff; |
| 1218 chunk->str[1] = (chunk->id >> 16) & 0xff; | |
| 1219 chunk->str[2] = (chunk->id >> 8) & 0xff; | |
| 1220 chunk->str[3] = (chunk->id) & 0xff; | |
| 1221 chunk->str[4] = 0; | |
| 1222 return chunk->str; | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1223 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1224 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1225 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
|
1226 { |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1227 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
|
1228 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1229 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
|
1230 chunk->size - used, used, chunk->size); |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1231 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
|
1232 } |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1233 else |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1234 return TRUE; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1235 } |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1236 |
| 445 | 1237 static BOOL dmCheckIFFChunk(DMIFFChunk *dest, DMIFFChunk *chunk, |
| 1238 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
|
1239 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1240 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
|
1241 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1242 dmError("ILBM: Multiple instances of chunk %s found.\n", |
| 445 | 1243 dmGetIFFChunkID(chunk)); |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1244 return FALSE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1245 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1246 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1247 dest->count++; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1248 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1249 if (chunk->size < minSize) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1250 return FALSE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1251 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1252 return TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1253 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1254 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1255 |
|
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
|
1256 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
|
1257 { |
|
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 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
|
1259 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
|
1260 { |
|
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 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
|
1262 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
|
1263 |
|
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 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
|
1265 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
|
1266 |
|
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 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
|
1268 { |
|
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 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
|
1270 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
|
1271 } |
|
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 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
|
1273 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
|
1274 { |
|
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 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
|
1276 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
|
1277 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
|
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 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
|
1280 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
|
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 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
|
1283 { |
|
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 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
|
1285 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
|
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 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
|
1288 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
|
1289 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
changeset
|
1290 buf[offs++] = data; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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diff
changeset
|
1291 } |
|
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
changeset
|
1292 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1293 } while (offs < bufLen); |
|
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
changeset
|
1294 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1295 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
|
1296 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1297 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1298 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
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445
diff
changeset
|
1299 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
|
1300 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
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parents:
445
diff
changeset
|
1301 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
|
1302 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:
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diff
changeset
|
1303 else |
|
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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
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|
1304 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>
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445
diff
changeset
|
1305 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1306 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1307 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1308 void dmDecodeBitPlane(Uint8 *dp, Uint8 *src, const int width, const int nplane) |
|
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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|
1309 { |
|
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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|
1310 int xc; |
|
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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|
1311 for (xc = 0; xc < width; xc++) |
|
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
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|
1312 { |
|
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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|
1313 const Uint8 data = (src[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:
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diff
changeset
|
1314 dp[xc] |= (data << nplane); |
|
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
|
1315 } |
|
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
|
1316 } |
|
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
|
1317 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1318 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1319 int dmDecodeILBMBody(FILE *fp, DMIFF *iff, DMImage **pimg, Uint32 *read) |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
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443
diff
changeset
|
1320 { |
|
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
|
1321 DMImage *img; |
|
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
|
1322 Uint8 *buf; |
|
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
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|
1323 size_t 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
|
1324 int yc, res = 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
|
1325 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1326 *read = 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
|
1327 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1328 // Allocate image |
|
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 if ((*pimg = img = dmImageAlloc(iff->bmhd.w, iff->bmhd.h)) == 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
|
1330 return DMERR_MALLOC; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1331 |
|
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 // Allocate planar decoding buffer |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1333 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>
parents:
445
diff
changeset
|
1334 if ((buf = dmMalloc(bufLen)) == 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
|
1335 return DMERR_MALLOC; |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1336 |
|
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 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.
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 the chunk |
|
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 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>
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 int 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
|
1343 const int nplanes = iff->bmhd.nplanes; |
|
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 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>
parents:
445
diff
changeset
|
1345 |
|
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 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:
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 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:
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 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>
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 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
|
1359 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
|
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 *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
|
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 |
|
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 // 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
|
1365 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
|
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 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
|
1368 |
|
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 // 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
|
1370 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
|
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 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
|
1373 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
|
1374 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
|
1375 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1376 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1377 // 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
|
1378 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
|
1379 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1380 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
|
1381 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1382 // 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
|
1383 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
|
1384 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
|
1385 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1386 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1387 *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
|
1388 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1389 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1390 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1391 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
|
1392 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
|
1393 return res; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1394 } |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1395 |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1396 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1397 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
|
1398 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1399 Uint32 idILBM; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1400 DMIFFChunk chunk; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1401 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
|
1402 Uint32 read; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1403 BOOL parsed = FALSE; |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1404 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
|
1405 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1406 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
|
1407 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1408 // Read IFF FORM header |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1409 if (!dmReadIFFChunk(fp, &chunk) || |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1410 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
|
1411 chunk.size < 32) |
|
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 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
|
1414 return DMERR_FREAD; |
|
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 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1417 // Check IFF ILBM signature |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1418 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
|
1419 idILBM != IFF_ID_ILBM) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1420 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1421 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
|
1422 return DMERR_INVALID_DATA; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1423 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1424 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1425 while (!parsed && !feof(fp)) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1426 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1427 if (!dmReadIFFChunk(fp, &chunk)) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1428 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1429 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
|
1430 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1431 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1432 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1433 switch (chunk.id) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1434 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1435 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
|
1436 // Check for multiple occurences of BMHD |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1437 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
|
1438 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1439 |
|
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 // Read BMHD data |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1441 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
|
1442 !dm_fread_be16(fp, &iff.bmhd.h) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1443 !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
|
1444 !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
|
1445 !dm_fread_byte(fp, &iff.bmhd.nplanes) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1446 !dm_fread_byte(fp, &iff.bmhd.masking) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1447 !dm_fread_byte(fp, &iff.bmhd.compression) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1448 !dm_fread_byte(fp, &iff.bmhd.pad1) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1449 !dm_fread_be16(fp, &iff.bmhd.transp) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1450 !dm_fread_byte(fp, &iff.bmhd.xasp) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1451 !dm_fread_byte(fp, &iff.bmhd.yasp) || |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1452 !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
|
1453 !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
|
1454 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1455 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
|
1456 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1457 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1458 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
|
1459 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
|
1460 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
|
1461 |
|
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
|
1462 // 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
|
1463 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
|
1464 (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
|
1465 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
|
1466 (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
|
1467 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
|
1468 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
|
1469 { |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1470 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
|
1471 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
|
1472 } |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1473 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1474 if (!dmSkipIFFChunkRest(fp, &chunk, sizeof(iff.bmhd))) |
|
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1475 return DMERR_FREAD; |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1476 break; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1477 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1478 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1479 case IFF_ID_CMAP: |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1480 // Check for multiple occurences of CMAP |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1481 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
|
1482 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1483 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1484 // Check for sanity |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1485 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
|
1486 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
|
1487 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1488 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
|
1489 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
|
1490 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
|
1491 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1492 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
|
1493 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
|
1494 |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1495 // Read palette |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1496 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
|
1497 { |
|
461
c7a3aacbd55e
Implement transparent color in IFF ILBM reader and ctransp setting in PNG reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
460
diff
changeset
|
1498 if (!dmPaletteAlloc(&iff.pal, iff.ncolors, |
|
c7a3aacbd55e
Implement transparent color in IFF ILBM reader and ctransp setting in PNG reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
460
diff
changeset
|
1499 (iff.bmhd.masking == IFF_MASK_TRANSP) ? iff.bmhd.transp : -1)) |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1500 { |
|
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1501 dmError("ILBM: Could not allocate palette data.\n"); |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1502 return DMERR_MALLOC; |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1503 } |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1504 if (!dmReadPaletteData(fp, iff.pal, iff.ncolors)) |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1505 { |
|
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1506 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
|
1507 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1508 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1509 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1510 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1511 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
|
1512 parsed = TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1513 break; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1514 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1515 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
|
1516 // Check for multiple occurences of CMAP |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1517 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
|
1518 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1519 |
|
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
|
1520 // Check for sanity |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1521 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
|
1522 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1523 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
|
1524 return DMERR_INVALID_DATA; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1525 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1526 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1527 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
|
1528 |
|
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1529 // 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
|
1530 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
|
1531 return res; |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1532 |
|
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
|
1533 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
|
1534 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
|
1535 |
|
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1536 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
|
1537 parsed = TRUE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1538 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
|
1539 |
|
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
|
1540 |
|
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
|
1541 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
|
1542 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
|
1543 { |
|
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
|
1544 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
|
1545 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
|
1546 } |
|
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
|
1547 |
|
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
|
1548 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
|
1549 |
|
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
|
1550 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
|
1551 { |
|
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
|
1552 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
|
1553 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
|
1554 } |
|
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
|
1555 |
|
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
|
1556 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
|
1557 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
|
1558 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
|
1559 |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1560 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1561 default: |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1562 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1563 dmMsg(3, "Unknown chunk ID '%s', size %d\n", |
| 445 | 1564 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
|
1565 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1566 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
|
1567 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1568 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
|
1569 return DMERR_FREAD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1570 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1571 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1572 break; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1573 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1574 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1575 if (chunk.size & 1) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1576 fgetc(fp); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1577 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1578 |
|
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
|
1579 // 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
|
1580 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
|
1581 { |
|
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
|
1582 // 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
|
1583 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
|
1584 { |
|
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
|
1585 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
|
1586 { |
|
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
|
1587 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
|
1588 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
|
1589 } |
|
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
|
1590 |
|
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
|
1591 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
|
1592 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
|
1593 |
|
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
|
1594 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
|
1595 { |
|
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
|
1596 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
|
1597 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
|
1598 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
|
1599 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
|
1600 } |
|
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
|
1601 } |
|
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
|
1602 |
|
447
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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|
1603 (*pimg)->ncolors = iff.ncolors; |
|
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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|
1604 (*pimg)->pal = iff.pal; |
|
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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|
1605 } |
|
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
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|
1606 |
|
443
f7c9d1619c74
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Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1607 return res; |
|
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Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1608 } |
|
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Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1609 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1610 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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diff
changeset
|
1611 int dmReadILBMImage(const char *filename, DMImage **pimg) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1612 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1613 FILE *fp; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1614 int res; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1615 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1616 if ((fp = fopen(filename, "rb")) == NULL) |
|
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Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1617 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1618 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>
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diff
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|
1619 return DMERR_FOPEN; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1620 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1621 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1622 res = dmReadILBMImageFILE(fp, pimg); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1623 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1624 fclose(fp); |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1625 return res; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1626 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1627 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1628 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1629 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
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|
1630 |
| 435 | 1631 static int fmtProbePNG(const Uint8 *buf, const size_t len) |
| 1632 { | |
| 1633 if (len > 64 && buf[0] == 0x89 && | |
| 1634 buf[1] == 'P' && buf[2] == 'N' && buf[3] == 'G' && | |
| 1635 buf[4] == 0x0d && buf[5] == 0x0a) | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1636 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1637 if (buf[12] == 'I' && buf[13] == 'H' && |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1638 buf[14] == 'D' && buf[15] == 'R') |
|
f7c9d1619c74
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Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1639 return DM_PROBE_SCORE_MAX; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1640 else |
|
f7c9d1619c74
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Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1641 return DM_PROBE_SCORE_GOOD; |
|
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Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
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|
1642 } |
| 435 | 1643 |
| 1644 return DM_PROBE_SCORE_FALSE; | |
| 1645 } | |
| 1646 | |
| 1647 | |
| 1648 static int fmtProbePCX(const Uint8 *buf, const size_t len) | |
| 1649 { | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1650 if (len > 128 + 32 && |
| 435 | 1651 buf[0] == 10 && |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1652 (buf[1] == 5 || buf[1] == 2 || buf[1] == 3) && |
| 435 | 1653 buf[2] == 1 && |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1654 (buf[3] == 8 || buf[3] == 4 || buf[3] == 3 || buf[3] == 1) && |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1655 buf[65] >= 1 && buf[65] <= 4) |
| 435 | 1656 return DM_PROBE_SCORE_GOOD; |
| 1657 | |
| 1658 return DM_PROBE_SCORE_FALSE; | |
| 1659 } | |
| 1660 | |
| 1661 | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1662 static int fmtProbeILBM(const Uint8 *buf, const size_t len) |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1663 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1664 if (len > 32 && |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1665 buf[ 0] == 'F' && buf[ 1] == 'O' && |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1666 buf[ 2] == 'R' && buf[ 3] == 'M' && |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1667 buf[ 8] == 'I' && buf[ 9] == 'L' && |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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442
diff
changeset
|
1668 buf[10] == 'B' && buf[11] == 'M') |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1669 { |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1670 if (buf[12] == 'B' && buf[13] == 'M' && |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1671 buf[14] == 'H' && buf[15] == 'D') |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
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|
1672 return DM_PROBE_SCORE_MAX; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
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|
1673 else |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1674 return DM_PROBE_SCORE_GOOD; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1675 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1676 |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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parents:
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diff
changeset
|
1677 return DM_PROBE_SCORE_FALSE; |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1678 } |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
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parents:
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diff
changeset
|
1679 |
|
f7c9d1619c74
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diff
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|
1680 |
| 435 | 1681 DMImageFormat dmImageFormatList[IMGFMT_LAST] = |
| 1682 { | |
| 1683 { | |
| 1684 "PNG", "Portable Network Graphics", | |
| 1685 fmtProbePNG, | |
| 1686 #ifdef DM_USE_LIBPNG | |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
1687 dmReadPNGImage, dmReadPNGImageFILE, |
| 435 | 1688 dmWritePNGImage, dmWritePNGImageFILE, |
| 1689 #else | |
| 1690 NULL, NULL, | |
|
453
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
1691 NULL, NULL, |
| 435 | 1692 #endif |
| 1693 }, | |
| 1694 { | |
| 1695 "PPM", "Portable PixMap", | |
| 1696 NULL, | |
| 1697 NULL, NULL, | |
| 1698 dmWritePPMImage, dmWritePPMImageFILE, | |
| 1699 }, | |
| 1700 { | |
| 1701 "PCX", "Z-Soft Paintbrush", | |
| 1702 fmtProbePCX, | |
| 1703 dmReadPCXImage, dmReadPCXImageFILE, | |
| 1704 dmWritePCXImage, dmWritePCXImageFILE, | |
| 1705 }, | |
| 1706 { | |
|
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1707 "ILBM", "IFF ILBM", |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1708 fmtProbeILBM, |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1709 dmReadILBMImage, dmReadILBMImageFILE, |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1710 NULL, NULL, |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
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diff
changeset
|
1711 }, |
|
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
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diff
changeset
|
1712 { |
| 435 | 1713 "ARAW", "IFFMaster Amiga RAW", |
| 1714 NULL, | |
| 1715 NULL, NULL, | |
| 1716 dmWriteIFFMasterRAWImage, dmWriteIFFMasterRAWImageFILE, | |
| 1717 } | |
| 1718 }; | |
| 1719 | |
| 1720 | |
| 1721 int dmImageProbeGeneric(const Uint8 *buf, const size_t len, DMImageFormat **pfmt, int *index) | |
| 1722 { | |
| 1723 int i, scoreMax = DM_PROBE_SCORE_FALSE, scoreIndex = -1; | |
| 1724 | |
| 1725 for (i = 0; i < IMGFMT_LAST; i++) | |
| 1726 { | |
| 1727 DMImageFormat *fmt = &dmImageFormatList[i]; | |
|
442
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1728 if (fmt->probe != NULL) |
| 435 | 1729 { |
|
442
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1730 int score = fmt->probe(buf, len); |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1731 if (score > scoreMax) |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1732 { |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1733 scoreMax = score; |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1734 scoreIndex = i; |
|
a67600e186d0
Fix probing to handle NULL probe functions.
Matti Hamalainen <ccr@tnsp.org>
parents:
440
diff
changeset
|
1735 } |
| 435 | 1736 } |
| 1737 } | |
| 1738 | |
| 1739 if (scoreIndex >= 0) | |
| 1740 { | |
| 1741 *pfmt = &dmImageFormatList[scoreIndex]; | |
| 1742 *index = scoreIndex; | |
| 1743 return scoreMax; | |
| 1744 } | |
| 1745 else | |
| 1746 return DM_PROBE_SCORE_FALSE; | |
| 1747 } |