Mercurial > hg > dmlib
annotate libgfx.c @ 464:358776103ceb
Add support for IFF PBMs.
author | Matti Hamalainen <ccr@tnsp.org> |
---|---|
date | Sun, 04 Nov 2012 16:36:21 +0200 |
parents | ab401a5087f9 |
children | ffd5e730d313 |
rev | line source |
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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) |
451
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52 { |
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53 int i; |
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54 |
451
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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; |
451
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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) |
451
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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); |
451
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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 | |
451
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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 { | |
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++) | |
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 { | |
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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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: | |
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399 dmError("PNG: Unsupported image format %d.\n", spec->format); |
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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", |
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
565 width, height, bit_depth, color_type); |
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
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.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
569 dmError("PNG: Could not allocate image data.\n"); |
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
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.
Matti Hamalainen <ccr@tnsp.org>
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.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
574 // ... |
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
575 row_pointers = png_malloc(png_ptr, height * sizeof(png_bytep)); |
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
576 for (i = 0; i < img->height; i++) |
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parents:
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diff
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577 row_pointers[i] = img->data + (i * img->pitch); |
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diff
changeset
|
578 |
349a2ff11531
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parents:
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diff
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|
579 png_read_image(png_ptr, row_pointers); |
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parents:
452
diff
changeset
|
580 |
349a2ff11531
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|
581 png_read_end(png_ptr, NULL); |
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582 |
349a2ff11531
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|
583 // Create palette |
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584 switch (color_type) |
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585 { |
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586 case PNG_COLOR_TYPE_GRAY: |
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587 ncolors = 256; |
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588 dmMsg(2, "PNG: Generating %d color grayscale palette.\n", ncolors); |
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589 |
460
0af039b6c0ae
Improve transparent color handling.
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453
diff
changeset
|
590 if (!dmImageAllocPalette(img, ncolors, -1)) |
453
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parents:
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diff
changeset
|
591 { |
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592 res = DMERR_MALLOC; |
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diff
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593 goto error; |
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changeset
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594 } |
349a2ff11531
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parents:
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diff
changeset
|
595 |
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diff
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596 for (i = 0; i < img->ncolors; i++) |
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diff
changeset
|
597 { |
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598 img->pal[i].r = img->pal[i].g = img->pal[i].b = i; |
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diff
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599 } |
349a2ff11531
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|
600 break; |
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Matti Hamalainen <ccr@tnsp.org>
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452
diff
changeset
|
601 |
349a2ff11531
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|
602 case PNG_COLOR_TYPE_PALETTE: |
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603 png_get_PLTE(png_ptr, info_ptr, &palette, &ncolors); |
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604 dmMsg(2, "PNG: Palette of %d colors found.\n", ncolors); |
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605 if (ncolors <= 0) |
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diff
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|
606 goto error; |
349a2ff11531
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452
diff
changeset
|
607 |
460
0af039b6c0ae
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parents:
453
diff
changeset
|
608 if (!dmImageAllocPalette(img, ncolors, -1)) |
453
349a2ff11531
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parents:
452
diff
changeset
|
609 { |
349a2ff11531
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diff
changeset
|
610 res = DMERR_MALLOC; |
349a2ff11531
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parents:
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diff
changeset
|
611 goto error; |
349a2ff11531
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diff
changeset
|
612 } |
349a2ff11531
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parents:
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diff
changeset
|
613 |
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
614 for (i = 0; i < img->ncolors; i++) |
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diff
changeset
|
615 { |
349a2ff11531
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616 img->pal[i].r = palette[i].red; |
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617 img->pal[i].g = palette[i].green; |
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618 img->pal[i].b = palette[i].blue; |
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619 } |
349a2ff11531
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620 break; |
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621 } |
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622 |
460
0af039b6c0ae
Improve transparent color handling.
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changeset
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623 if (color_type == PNG_COLOR_TYPE_PALETTE || |
0af039b6c0ae
Improve transparent color handling.
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624 color_type == PNG_COLOR_TYPE_GRAY) |
0af039b6c0ae
Improve transparent color handling.
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parents:
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diff
changeset
|
625 { |
0af039b6c0ae
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626 png_get_tRNS(png_ptr, info_ptr, &trans, &ntrans, NULL); |
0af039b6c0ae
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627 for (i = 0; i < img->ncolors && i < ntrans; i++) |
0af039b6c0ae
Improve transparent color handling.
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parents:
453
diff
changeset
|
628 { |
0af039b6c0ae
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parents:
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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
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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.
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parents:
453
diff
changeset
|
633 } |
0af039b6c0ae
Improve transparent color handling.
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453
diff
changeset
|
634 |
453
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
parents:
452
diff
changeset
|
635 error: |
460
0af039b6c0ae
Improve transparent color handling.
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changeset
|
636 // png_free(png_ptr, palette); |
453
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
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452
diff
changeset
|
637 |
349a2ff11531
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|
638 if (png_ptr && info_ptr) |
349a2ff11531
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changeset
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639 png_destroy_read_struct(&png_ptr, &info_ptr, NULL); |
349a2ff11531
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452
diff
changeset
|
640 |
349a2ff11531
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Matti Hamalainen <ccr@tnsp.org>
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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
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diff
changeset
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645 int dmReadPNGImage(const char *filename, DMImage **img) |
349a2ff11531
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diff
changeset
|
646 { |
349a2ff11531
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diff
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|
647 int res; |
349a2ff11531
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648 FILE *fp; |
349a2ff11531
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diff
changeset
|
649 |
349a2ff11531
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650 if ((fp = fopen(filename, "rb")) == NULL) |
349a2ff11531
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parents:
452
diff
changeset
|
651 { |
349a2ff11531
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diff
changeset
|
652 dmError("PNG: Could not open file '%s' for reading.\n", filename); |
349a2ff11531
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653 return DMERR_FOPEN; |
349a2ff11531
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diff
changeset
|
654 } |
349a2ff11531
Implement PNG (1-8bpp indexed) reading support via libPNG.
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parents:
452
diff
changeset
|
655 |
349a2ff11531
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diff
changeset
|
656 res = dmReadPNGImageFILE(fp, img); |
349a2ff11531
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diff
changeset
|
657 |
349a2ff11531
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diff
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|
658 fclose(fp); |
349a2ff11531
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|
659 return res; |
349a2ff11531
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|
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" |
464 | 1152 #define IFF_ID_PBM 0x50424D20 // "PBM " |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1153 #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
|
1154 #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
|
1155 #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
|
1156 #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
|
1157 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1158 #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
|
1159 #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
|
1160 #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
|
1161 #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
|
1162 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1163 #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
|
1164 #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
|
1165 |
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
|
1166 #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
|
1167 #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
|
1168 #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
|
1169 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1170 typedef struct |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1171 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1172 Uint32 id; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1173 Uint32 size; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1174 int count; |
445 | 1175 char str[6]; |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1176 } DMIFFChunk; |
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 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1179 typedef struct |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1180 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1181 Uint16 w, h; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1182 Sint16 x, y; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1183 Uint8 nplanes; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1184 Uint8 masking; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1185 Uint8 compression; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1186 Uint8 pad1; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1187 Uint16 transp; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1188 Uint8 xasp, yasp; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1189 Sint16 pagew, pageh; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1190 } DMIFFBMHD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1191 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1192 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1193 typedef struct |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1194 { |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1195 DMIFFChunk chBMHD, chCMAP, chBODY; |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1196 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
|
1197 Uint32 camg; |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1198 int ncolors; |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1199 DMColor *pal; |
464 | 1200 BOOL paletted, planar; |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1201 } DMIFF; |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1202 |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1203 |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1204 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
|
1205 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1206 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
|
1207 !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
|
1208 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1209 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
|
1210 return FALSE; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1211 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1212 else |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1213 return TRUE; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1214 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1215 |
445 | 1216 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
|
1217 { |
445 | 1218 chunk->str[0] = (chunk->id >> 24) & 0xff; |
1219 chunk->str[1] = (chunk->id >> 16) & 0xff; | |
1220 chunk->str[2] = (chunk->id >> 8) & 0xff; | |
1221 chunk->str[3] = (chunk->id) & 0xff; | |
1222 chunk->str[4] = 0; | |
1223 return chunk->str; | |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1224 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1225 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1226 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
|
1227 { |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1228 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
|
1229 { |
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 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
|
1231 chunk->size - used, used, chunk->size); |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1232 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
|
1233 } |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1234 else |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1235 return TRUE; |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1236 } |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1237 |
445 | 1238 static BOOL dmCheckIFFChunk(DMIFFChunk *dest, DMIFFChunk *chunk, |
1239 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
|
1240 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1241 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
|
1242 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1243 dmError("ILBM: Multiple instances of chunk %s found.\n", |
445 | 1244 dmGetIFFChunkID(chunk)); |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1245 return FALSE; |
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 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1248 dest->count++; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1249 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1250 if (chunk->size < minSize) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1251 return FALSE; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1252 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1253 return TRUE; |
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 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1256 |
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
|
1257 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
|
1258 { |
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 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
|
1260 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
|
1261 { |
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 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
|
1263 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
|
1264 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1265 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
|
1266 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
|
1267 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1268 if (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
|
1269 { |
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 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
|
1271 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
|
1272 } |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1273 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
|
1274 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
|
1275 { |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1276 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
|
1277 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
|
1278 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
|
1279 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1280 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
|
1281 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
|
1282 } |
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 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
|
1284 { |
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 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
|
1286 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
|
1287 { |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1288 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
|
1289 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
|
1290 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1291 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
|
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 } |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1294 } while (offs < bufLen); |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1295 |
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 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
|
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>
parents:
445
diff
changeset
|
1299 |
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 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
|
1301 { |
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 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
|
1303 return dmIFFDecodeByteRun1Row(fp, buf, bufLen); |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1304 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
|
1305 return dm_fread_str(fp, buf, bufLen); |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
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 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1309 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>
parents:
445
diff
changeset
|
1310 { |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1311 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
|
1312 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:
445
diff
changeset
|
1313 { |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1314 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:
445
diff
changeset
|
1315 dp[xc] |= (data << nplane); |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1316 } |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
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 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1320 int dmDecodeILBMBody(FILE *fp, DMIFF *iff, DMImage **pimg, Uint32 *read) |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1321 { |
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
|
1322 DMImage *img; |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1323 Uint8 *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
|
1324 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
|
1325 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
|
1326 |
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 *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
|
1328 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1329 // 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
|
1330 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
|
1331 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
|
1332 |
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 // 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
|
1334 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
|
1335 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
|
1336 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
|
1337 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1338 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
|
1339 |
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 // 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
|
1341 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
|
1342 { |
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 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
|
1344 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
|
1345 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
|
1346 |
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 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
|
1348 |
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 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
|
1350 { |
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 // 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
|
1352 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
|
1353 { |
464 | 1354 dmError("ILBM: Error in reading image plane #%d @ %d.\n", plane, yc); |
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
|
1355 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
|
1356 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
|
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 |
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 // 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
|
1360 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
|
1361 |
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 *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
|
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 |
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 // 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
|
1366 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
|
1367 { |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1368 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
|
1369 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1370 // 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
|
1371 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
|
1372 { |
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 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
|
1374 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
|
1375 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
|
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 |
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 // 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
|
1379 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
|
1380 { |
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 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
|
1382 |
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 // 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
|
1384 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
|
1385 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
|
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 |
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 *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
|
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 |
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 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
|
1393 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
|
1394 return res; |
444
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 |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1397 |
464 | 1398 int dmDecodePBMBody(FILE *fp, DMIFF *iff, DMImage **pimg, Uint32 *read) |
1399 { | |
1400 DMImage *img; | |
1401 int yc, res = DMERR_OK; | |
1402 | |
1403 *read = 0; | |
1404 | |
1405 // Allocate image | |
1406 if ((*pimg = img = dmImageAlloc(iff->bmhd.w, iff->bmhd.h)) == NULL) | |
1407 return DMERR_MALLOC; | |
1408 | |
1409 // Decode the chunk | |
1410 for (yc = 0; yc < img->height; yc++) | |
1411 { | |
1412 Uint8 *dp = img->data + (yc * img->pitch); | |
1413 | |
1414 if (!dmIFFReadOneRow(fp, iff, dp, img->width)) | |
1415 { | |
1416 dmError("ILBM: Error in reading image row #%d.\n", yc); | |
1417 res = DMERR_FREAD; | |
1418 goto error; | |
1419 } | |
1420 | |
1421 *read += img->width; | |
1422 } | |
1423 | |
1424 error: | |
1425 return res; | |
1426 } | |
1427 | |
1428 | |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1429 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
|
1430 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1431 Uint32 idILBM; |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1432 DMIFFChunk chunk; |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1433 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
|
1434 Uint32 read; |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1435 BOOL parsed = FALSE; |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1436 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
|
1437 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1438 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
|
1439 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1440 // Read IFF FORM header |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1441 if (!dmReadIFFChunk(fp, &chunk) || |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1442 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
|
1443 chunk.size < 32) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1444 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1445 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
|
1446 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1447 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1448 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1449 // Check IFF ILBM signature |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1450 if (!dm_fread_be32(fp, &idILBM) || |
464 | 1451 (idILBM != IFF_ID_ILBM && idILBM != IFF_ID_PBM)) |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1452 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1453 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
|
1454 return DMERR_INVALID_DATA; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1455 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1456 |
464 | 1457 iff.planar = (idILBM == IFF_ID_ILBM); |
1458 | |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1459 while (!parsed && !feof(fp)) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1460 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1461 if (!dmReadIFFChunk(fp, &chunk)) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1462 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1463 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
|
1464 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1465 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1466 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1467 switch (chunk.id) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1468 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1469 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
|
1470 // Check for multiple occurences of BMHD |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1471 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
|
1472 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1473 |
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
|
1474 // Read BMHD data |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1475 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
|
1476 !dm_fread_be16(fp, &iff.bmhd.h) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1477 !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
|
1478 !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
|
1479 !dm_fread_byte(fp, &iff.bmhd.nplanes) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1480 !dm_fread_byte(fp, &iff.bmhd.masking) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1481 !dm_fread_byte(fp, &iff.bmhd.compression) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1482 !dm_fread_byte(fp, &iff.bmhd.pad1) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1483 !dm_fread_be16(fp, &iff.bmhd.transp) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1484 !dm_fread_byte(fp, &iff.bmhd.xasp) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1485 !dm_fread_byte(fp, &iff.bmhd.yasp) || |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1486 !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
|
1487 !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
|
1488 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1489 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
|
1490 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1491 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1492 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
|
1493 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
|
1494 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
|
1495 |
447
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1496 // 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
|
1497 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
|
1498 (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
|
1499 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
|
1500 (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
|
1501 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
|
1502 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
|
1503 { |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1504 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
|
1505 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
|
1506 } |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1507 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1508 if (!dmSkipIFFChunkRest(fp, &chunk, sizeof(iff.bmhd))) |
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1509 return DMERR_FREAD; |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1510 break; |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1511 |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1512 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1513 case IFF_ID_CMAP: |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1514 // Check for multiple occurences of CMAP |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1515 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
|
1516 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1517 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1518 // Check for sanity |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1519 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
|
1520 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
|
1521 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1522 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
|
1523 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
|
1524 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
|
1525 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1526 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
|
1527 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
|
1528 |
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1529 // Read palette |
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1530 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
|
1531 { |
461
c7a3aacbd55e
Implement transparent color in IFF ILBM reader and ctransp setting in PNG reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
460
diff
changeset
|
1532 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
|
1533 (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
|
1534 { |
451
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1535 dmError("ILBM: Could not allocate palette data.\n"); |
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1536 return DMERR_MALLOC; |
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1537 } |
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1538 if (!dmReadPaletteData(fp, iff.pal, iff.ncolors)) |
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1539 { |
fdc91f2a0d27
Modularize palette reading and handling code.
Matti Hamalainen <ccr@tnsp.org>
parents:
449
diff
changeset
|
1540 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
|
1541 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1542 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1543 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1544 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1545 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
|
1546 parsed = TRUE; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1547 break; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1548 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1549 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
|
1550 // Check for multiple occurences of CMAP |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1551 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
|
1552 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1553 |
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
|
1554 // Check for sanity |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1555 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
|
1556 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1557 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
|
1558 return DMERR_INVALID_DATA; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1559 } |
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 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
|
1562 |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1563 // Decode the body |
464 | 1564 if (iff.planar) |
1565 { | |
1566 if ((res = dmDecodeILBMBody(fp, &iff, pimg, &read)) != DMERR_OK) | |
1567 return res; | |
1568 } | |
1569 else | |
1570 { | |
1571 if ((res = dmDecodePBMBody(fp, &iff, pimg, &read)) != DMERR_OK) | |
1572 return res; | |
1573 } | |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1574 |
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
|
1575 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
|
1576 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
|
1577 |
444
7d588807f91d
Clean up the IFF parser a bit.
Matti Hamalainen <ccr@tnsp.org>
parents:
443
diff
changeset
|
1578 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
|
1579 parsed = TRUE; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1580 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
|
1581 |
117f94b253af
Add support for CAMG chunk reading and possibly half-brite handling in IFF ILBM reader.
Matti Hamalainen <ccr@tnsp.org>
parents:
448
diff
changeset
|
1582 |
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 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
|
1584 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
|
1585 { |
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 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
|
1587 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
|
1588 } |
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 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
|
1591 |
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 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
|
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 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
|
1595 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
|
1596 } |
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 |
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 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
|
1599 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
|
1600 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
|
1601 |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1602 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1603 default: |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1604 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1605 dmMsg(3, "Unknown chunk ID '%s', size %d\n", |
445 | 1606 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
|
1607 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1608 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
|
1609 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1610 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
|
1611 return DMERR_FREAD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1612 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1613 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1614 break; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1615 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1616 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1617 if (chunk.size & 1) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1618 fgetc(fp); |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1619 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1620 |
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
|
1621 // 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
|
1622 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
|
1623 { |
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
|
1624 // 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
|
1625 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
|
1626 { |
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
|
1627 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
|
1628 { |
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
|
1629 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
|
1630 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
|
1631 } |
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
|
1632 |
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
|
1633 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
|
1634 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
|
1635 |
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
|
1636 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
|
1637 { |
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
|
1638 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
|
1639 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
|
1640 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
|
1641 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
|
1642 } |
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
|
1643 } |
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
|
1644 |
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
|
1645 (*pimg)->ncolors = iff.ncolors; |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1646 (*pimg)->pal = iff.pal; |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1647 } |
0e27860ddcfe
Finish initial implementation of IFF ILBM loader. And whoa .. it seems to be working.
Matti Hamalainen <ccr@tnsp.org>
parents:
445
diff
changeset
|
1648 |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1649 return res; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1650 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1651 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1652 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1653 int dmReadILBMImage(const char *filename, DMImage **pimg) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1654 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1655 FILE *fp; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1656 int res; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1657 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1658 if ((fp = fopen(filename, "rb")) == NULL) |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1659 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1660 dmError("ILBM: Could not open file '%s' for reading.\n", filename); |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1661 return DMERR_FOPEN; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1662 } |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1663 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1664 res = dmReadILBMImageFILE(fp, pimg); |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1665 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1666 fclose(fp); |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1667 return res; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1668 } |
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 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1671 |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1672 |
435 | 1673 static int fmtProbePNG(const Uint8 *buf, const size_t len) |
1674 { | |
1675 if (len > 64 && buf[0] == 0x89 && | |
1676 buf[1] == 'P' && buf[2] == 'N' && buf[3] == 'G' && | |
1677 buf[4] == 0x0d && buf[5] == 0x0a) | |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1678 { |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1679 if (buf[12] == 'I' && buf[13] == 'H' && |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1680 buf[14] == 'D' && buf[15] == 'R') |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1681 return DM_PROBE_SCORE_MAX; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1682 else |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1683 return DM_PROBE_SCORE_GOOD; |
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1684 } |
435 | 1685 |
1686 return DM_PROBE_SCORE_FALSE; | |
1687 } | |
1688 | |
1689 | |
1690 static int fmtProbePCX(const Uint8 *buf, const size_t len) | |
1691 { | |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1692 if (len > 128 + 32 && |
435 | 1693 buf[0] == 10 && |
443
f7c9d1619c74
Beginnings of IFF ILBM reader. Not functional, only chunk parsing,
Matti Hamalainen <ccr@tnsp.org>
parents:
442
diff
changeset
|
1694 (buf[1] == 5 || buf[1] == 2 || buf[1] == 3) && |
435 | 1695 buf[2] == 1 && |
443
f7c9d1619c74
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1696 (buf[3] == 8 || buf[3] == 4 || buf[3] == 3 || buf[3] == 1) && |
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1697 buf[65] >= 1 && buf[65] <= 4) |
435 | 1698 return DM_PROBE_SCORE_GOOD; |
1699 | |
1700 return DM_PROBE_SCORE_FALSE; | |
1701 } | |
1702 | |
1703 | |
443
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1704 static int fmtProbeILBM(const Uint8 *buf, const size_t len) |
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1705 { |
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1706 if (len > 32 && |
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1707 buf[ 0] == 'F' && buf[ 1] == 'O' && |
464 | 1708 buf[ 2] == 'R' && buf[ 3] == 'M' && ( |
1709 (buf[ 8] == 'I' && buf[ 9] == 'L' && buf[10] == 'B' && buf[11] == 'M') || | |
1710 (buf[ 8] == 'P' && buf[ 9] == 'B' && buf[10] == 'M' && buf[11] == 0x20) | |
1711 )) | |
443
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1712 { |
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1713 if (buf[12] == 'B' && buf[13] == 'M' && |
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1714 buf[14] == 'H' && buf[15] == 'D') |
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1715 return DM_PROBE_SCORE_MAX; |
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1716 else |
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1717 return DM_PROBE_SCORE_GOOD; |
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1718 } |
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1719 |
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1720 return DM_PROBE_SCORE_FALSE; |
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1721 } |
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1722 |
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1723 |
435 | 1724 DMImageFormat dmImageFormatList[IMGFMT_LAST] = |
1725 { | |
1726 { | |
1727 "PNG", "Portable Network Graphics", | |
1728 fmtProbePNG, | |
1729 #ifdef DM_USE_LIBPNG | |
453
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1730 dmReadPNGImage, dmReadPNGImageFILE, |
435 | 1731 dmWritePNGImage, dmWritePNGImageFILE, |
1732 #else | |
1733 NULL, NULL, | |
453
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1734 NULL, NULL, |
435 | 1735 #endif |
1736 }, | |
1737 { | |
1738 "PPM", "Portable PixMap", | |
1739 NULL, | |
1740 NULL, NULL, | |
1741 dmWritePPMImage, dmWritePPMImageFILE, | |
1742 }, | |
1743 { | |
1744 "PCX", "Z-Soft Paintbrush", | |
1745 fmtProbePCX, | |
1746 dmReadPCXImage, dmReadPCXImageFILE, | |
1747 dmWritePCXImage, dmWritePCXImageFILE, | |
1748 }, | |
1749 { | |
443
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1750 "ILBM", "IFF ILBM", |
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1751 fmtProbeILBM, |
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1752 dmReadILBMImage, dmReadILBMImageFILE, |
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1753 NULL, NULL, |
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1754 }, |
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1755 { |
435 | 1756 "ARAW", "IFFMaster Amiga RAW", |
1757 NULL, | |
1758 NULL, NULL, | |
1759 dmWriteIFFMasterRAWImage, dmWriteIFFMasterRAWImageFILE, | |
1760 } | |
1761 }; | |
1762 | |
1763 | |
1764 int dmImageProbeGeneric(const Uint8 *buf, const size_t len, DMImageFormat **pfmt, int *index) | |
1765 { | |
1766 int i, scoreMax = DM_PROBE_SCORE_FALSE, scoreIndex = -1; | |
1767 | |
1768 for (i = 0; i < IMGFMT_LAST; i++) | |
1769 { | |
1770 DMImageFormat *fmt = &dmImageFormatList[i]; | |
442
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1771 if (fmt->probe != NULL) |
435 | 1772 { |
442
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1773 int score = fmt->probe(buf, len); |
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1774 if (score > scoreMax) |
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1775 { |
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1776 scoreMax = score; |
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1777 scoreIndex = i; |
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1778 } |
435 | 1779 } |
1780 } | |
1781 | |
1782 if (scoreIndex >= 0) | |
1783 { | |
1784 *pfmt = &dmImageFormatList[scoreIndex]; | |
1785 *index = scoreIndex; | |
1786 return scoreMax; | |
1787 } | |
1788 else | |
1789 return DM_PROBE_SCORE_FALSE; | |
1790 } |