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author | David Walter Seikel | 2014-01-13 19:47:58 +1000 |
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committer | David Walter Seikel | 2014-01-13 19:47:58 +1000 |
commit | f9158592e1478b2013afc7041d9ed041cf2d2f4a (patch) | |
tree | b16e389d7988700e21b4c9741044cefa536dcbae /libraries/irrlicht-1.8/source/Irrlicht/libpng/pngset.c | |
parent | Libraries readme updated with change markers and more of the Irrlicht changes. (diff) | |
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Update Irrlicht to 1.8.1. Include actual change markers this time. lol
Diffstat (limited to 'libraries/irrlicht-1.8/source/Irrlicht/libpng/pngset.c')
-rw-r--r-- | libraries/irrlicht-1.8/source/Irrlicht/libpng/pngset.c | 1284 |
1 files changed, 0 insertions, 1284 deletions
diff --git a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngset.c b/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngset.c deleted file mode 100644 index 92db389..0000000 --- a/libraries/irrlicht-1.8/source/Irrlicht/libpng/pngset.c +++ /dev/null | |||
@@ -1,1284 +0,0 @@ | |||
1 | |||
2 | /* pngset.c - storage of image information into info struct | ||
3 | * | ||
4 | * Last changed in libpng 1.5.7 [December 15, 2011] | ||
5 | * Copyright (c) 1998-2011 Glenn Randers-Pehrson | ||
6 | * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger) | ||
7 | * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.) | ||
8 | * | ||
9 | * This code is released under the libpng license. | ||
10 | * For conditions of distribution and use, see the disclaimer | ||
11 | * and license in png.h | ||
12 | * | ||
13 | * The functions here are used during reads to store data from the file | ||
14 | * into the info struct, and during writes to store application data | ||
15 | * into the info struct for writing into the file. This abstracts the | ||
16 | * info struct and allows us to change the structure in the future. | ||
17 | */ | ||
18 | |||
19 | #include "pngpriv.h" | ||
20 | |||
21 | #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) | ||
22 | |||
23 | #ifdef PNG_bKGD_SUPPORTED | ||
24 | void PNGAPI | ||
25 | png_set_bKGD(png_structp png_ptr, png_infop info_ptr, | ||
26 | png_const_color_16p background) | ||
27 | { | ||
28 | png_debug1(1, "in %s storage function", "bKGD"); | ||
29 | |||
30 | if (png_ptr == NULL || info_ptr == NULL) | ||
31 | return; | ||
32 | |||
33 | png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16)); | ||
34 | info_ptr->valid |= PNG_INFO_bKGD; | ||
35 | } | ||
36 | #endif | ||
37 | |||
38 | #ifdef PNG_cHRM_SUPPORTED | ||
39 | void PNGFAPI | ||
40 | png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, | ||
41 | png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, | ||
42 | png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, | ||
43 | png_fixed_point blue_x, png_fixed_point blue_y) | ||
44 | { | ||
45 | png_debug1(1, "in %s storage function", "cHRM fixed"); | ||
46 | |||
47 | if (png_ptr == NULL || info_ptr == NULL) | ||
48 | return; | ||
49 | |||
50 | # ifdef PNG_CHECK_cHRM_SUPPORTED | ||
51 | if (png_check_cHRM_fixed(png_ptr, | ||
52 | white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y)) | ||
53 | # endif | ||
54 | { | ||
55 | info_ptr->x_white = white_x; | ||
56 | info_ptr->y_white = white_y; | ||
57 | info_ptr->x_red = red_x; | ||
58 | info_ptr->y_red = red_y; | ||
59 | info_ptr->x_green = green_x; | ||
60 | info_ptr->y_green = green_y; | ||
61 | info_ptr->x_blue = blue_x; | ||
62 | info_ptr->y_blue = blue_y; | ||
63 | info_ptr->valid |= PNG_INFO_cHRM; | ||
64 | } | ||
65 | } | ||
66 | |||
67 | void PNGFAPI | ||
68 | png_set_cHRM_XYZ_fixed(png_structp png_ptr, png_infop info_ptr, | ||
69 | png_fixed_point int_red_X, png_fixed_point int_red_Y, | ||
70 | png_fixed_point int_red_Z, png_fixed_point int_green_X, | ||
71 | png_fixed_point int_green_Y, png_fixed_point int_green_Z, | ||
72 | png_fixed_point int_blue_X, png_fixed_point int_blue_Y, | ||
73 | png_fixed_point int_blue_Z) | ||
74 | { | ||
75 | png_XYZ XYZ; | ||
76 | png_xy xy; | ||
77 | |||
78 | png_debug1(1, "in %s storage function", "cHRM XYZ fixed"); | ||
79 | |||
80 | if (png_ptr == NULL || info_ptr == NULL) | ||
81 | return; | ||
82 | |||
83 | XYZ.redX = int_red_X; | ||
84 | XYZ.redY = int_red_Y; | ||
85 | XYZ.redZ = int_red_Z; | ||
86 | XYZ.greenX = int_green_X; | ||
87 | XYZ.greenY = int_green_Y; | ||
88 | XYZ.greenZ = int_green_Z; | ||
89 | XYZ.blueX = int_blue_X; | ||
90 | XYZ.blueY = int_blue_Y; | ||
91 | XYZ.blueZ = int_blue_Z; | ||
92 | |||
93 | if (png_xy_from_XYZ(&xy, XYZ)) | ||
94 | png_error(png_ptr, "XYZ values out of representable range"); | ||
95 | |||
96 | png_set_cHRM_fixed(png_ptr, info_ptr, xy.whitex, xy.whitey, xy.redx, xy.redy, | ||
97 | xy.greenx, xy.greeny, xy.bluex, xy.bluey); | ||
98 | } | ||
99 | |||
100 | # ifdef PNG_FLOATING_POINT_SUPPORTED | ||
101 | void PNGAPI | ||
102 | png_set_cHRM(png_structp png_ptr, png_infop info_ptr, | ||
103 | double white_x, double white_y, double red_x, double red_y, | ||
104 | double green_x, double green_y, double blue_x, double blue_y) | ||
105 | { | ||
106 | png_set_cHRM_fixed(png_ptr, info_ptr, | ||
107 | png_fixed(png_ptr, white_x, "cHRM White X"), | ||
108 | png_fixed(png_ptr, white_y, "cHRM White Y"), | ||
109 | png_fixed(png_ptr, red_x, "cHRM Red X"), | ||
110 | png_fixed(png_ptr, red_y, "cHRM Red Y"), | ||
111 | png_fixed(png_ptr, green_x, "cHRM Green X"), | ||
112 | png_fixed(png_ptr, green_y, "cHRM Green Y"), | ||
113 | png_fixed(png_ptr, blue_x, "cHRM Blue X"), | ||
114 | png_fixed(png_ptr, blue_y, "cHRM Blue Y")); | ||
115 | } | ||
116 | |||
117 | void PNGAPI | ||
118 | png_set_cHRM_XYZ(png_structp png_ptr, png_infop info_ptr, double red_X, | ||
119 | double red_Y, double red_Z, double green_X, double green_Y, double green_Z, | ||
120 | double blue_X, double blue_Y, double blue_Z) | ||
121 | { | ||
122 | png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, | ||
123 | png_fixed(png_ptr, red_X, "cHRM Red X"), | ||
124 | png_fixed(png_ptr, red_Y, "cHRM Red Y"), | ||
125 | png_fixed(png_ptr, red_Z, "cHRM Red Z"), | ||
126 | png_fixed(png_ptr, green_X, "cHRM Red X"), | ||
127 | png_fixed(png_ptr, green_Y, "cHRM Red Y"), | ||
128 | png_fixed(png_ptr, green_Z, "cHRM Red Z"), | ||
129 | png_fixed(png_ptr, blue_X, "cHRM Red X"), | ||
130 | png_fixed(png_ptr, blue_Y, "cHRM Red Y"), | ||
131 | png_fixed(png_ptr, blue_Z, "cHRM Red Z")); | ||
132 | } | ||
133 | # endif /* PNG_FLOATING_POINT_SUPPORTED */ | ||
134 | |||
135 | #endif /* PNG_cHRM_SUPPORTED */ | ||
136 | |||
137 | #ifdef PNG_gAMA_SUPPORTED | ||
138 | void PNGFAPI | ||
139 | png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point | ||
140 | file_gamma) | ||
141 | { | ||
142 | png_debug1(1, "in %s storage function", "gAMA"); | ||
143 | |||
144 | if (png_ptr == NULL || info_ptr == NULL) | ||
145 | return; | ||
146 | |||
147 | /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't | ||
148 | * occur. Since the fixed point representation is assymetrical it is | ||
149 | * possible for 1/gamma to overflow the limit of 21474 and this means the | ||
150 | * gamma value must be at least 5/100000 and hence at most 20000.0. For | ||
151 | * safety the limits here are a little narrower. The values are 0.00016 to | ||
152 | * 6250.0, which are truly ridiculous gammma values (and will produce | ||
153 | * displays that are all black or all white.) | ||
154 | */ | ||
155 | if (file_gamma < 16 || file_gamma > 625000000) | ||
156 | png_warning(png_ptr, "Out of range gamma value ignored"); | ||
157 | |||
158 | else | ||
159 | { | ||
160 | info_ptr->gamma = file_gamma; | ||
161 | info_ptr->valid |= PNG_INFO_gAMA; | ||
162 | } | ||
163 | } | ||
164 | |||
165 | # ifdef PNG_FLOATING_POINT_SUPPORTED | ||
166 | void PNGAPI | ||
167 | png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma) | ||
168 | { | ||
169 | png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma, | ||
170 | "png_set_gAMA")); | ||
171 | } | ||
172 | # endif | ||
173 | #endif | ||
174 | |||
175 | #ifdef PNG_hIST_SUPPORTED | ||
176 | void PNGAPI | ||
177 | png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_const_uint_16p hist) | ||
178 | { | ||
179 | int i; | ||
180 | |||
181 | png_debug1(1, "in %s storage function", "hIST"); | ||
182 | |||
183 | if (png_ptr == NULL || info_ptr == NULL) | ||
184 | return; | ||
185 | |||
186 | if (info_ptr->num_palette == 0 || info_ptr->num_palette | ||
187 | > PNG_MAX_PALETTE_LENGTH) | ||
188 | { | ||
189 | png_warning(png_ptr, | ||
190 | "Invalid palette size, hIST allocation skipped"); | ||
191 | |||
192 | return; | ||
193 | } | ||
194 | |||
195 | png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0); | ||
196 | |||
197 | /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in | ||
198 | * version 1.2.1 | ||
199 | */ | ||
200 | png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr, | ||
201 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_uint_16)); | ||
202 | |||
203 | if (png_ptr->hist == NULL) | ||
204 | { | ||
205 | png_warning(png_ptr, "Insufficient memory for hIST chunk data"); | ||
206 | return; | ||
207 | } | ||
208 | |||
209 | for (i = 0; i < info_ptr->num_palette; i++) | ||
210 | png_ptr->hist[i] = hist[i]; | ||
211 | |||
212 | info_ptr->hist = png_ptr->hist; | ||
213 | info_ptr->valid |= PNG_INFO_hIST; | ||
214 | info_ptr->free_me |= PNG_FREE_HIST; | ||
215 | } | ||
216 | #endif | ||
217 | |||
218 | void PNGAPI | ||
219 | png_set_IHDR(png_structp png_ptr, png_infop info_ptr, | ||
220 | png_uint_32 width, png_uint_32 height, int bit_depth, | ||
221 | int color_type, int interlace_type, int compression_type, | ||
222 | int filter_type) | ||
223 | { | ||
224 | png_debug1(1, "in %s storage function", "IHDR"); | ||
225 | |||
226 | if (png_ptr == NULL || info_ptr == NULL) | ||
227 | return; | ||
228 | |||
229 | info_ptr->width = width; | ||
230 | info_ptr->height = height; | ||
231 | info_ptr->bit_depth = (png_byte)bit_depth; | ||
232 | info_ptr->color_type = (png_byte)color_type; | ||
233 | info_ptr->compression_type = (png_byte)compression_type; | ||
234 | info_ptr->filter_type = (png_byte)filter_type; | ||
235 | info_ptr->interlace_type = (png_byte)interlace_type; | ||
236 | |||
237 | png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height, | ||
238 | info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type, | ||
239 | info_ptr->compression_type, info_ptr->filter_type); | ||
240 | |||
241 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) | ||
242 | info_ptr->channels = 1; | ||
243 | |||
244 | else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR) | ||
245 | info_ptr->channels = 3; | ||
246 | |||
247 | else | ||
248 | info_ptr->channels = 1; | ||
249 | |||
250 | if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA) | ||
251 | info_ptr->channels++; | ||
252 | |||
253 | info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth); | ||
254 | |||
255 | /* Check for potential overflow */ | ||
256 | if (width > | ||
257 | (PNG_UINT_32_MAX >> 3) /* 8-byte RRGGBBAA pixels */ | ||
258 | - 48 /* bigrowbuf hack */ | ||
259 | - 1 /* filter byte */ | ||
260 | - 7*8 /* rounding of width to multiple of 8 pixels */ | ||
261 | - 8) /* extra max_pixel_depth pad */ | ||
262 | info_ptr->rowbytes = 0; | ||
263 | else | ||
264 | info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width); | ||
265 | } | ||
266 | |||
267 | #ifdef PNG_oFFs_SUPPORTED | ||
268 | void PNGAPI | ||
269 | png_set_oFFs(png_structp png_ptr, png_infop info_ptr, | ||
270 | png_int_32 offset_x, png_int_32 offset_y, int unit_type) | ||
271 | { | ||
272 | png_debug1(1, "in %s storage function", "oFFs"); | ||
273 | |||
274 | if (png_ptr == NULL || info_ptr == NULL) | ||
275 | return; | ||
276 | |||
277 | info_ptr->x_offset = offset_x; | ||
278 | info_ptr->y_offset = offset_y; | ||
279 | info_ptr->offset_unit_type = (png_byte)unit_type; | ||
280 | info_ptr->valid |= PNG_INFO_oFFs; | ||
281 | } | ||
282 | #endif | ||
283 | |||
284 | #ifdef PNG_pCAL_SUPPORTED | ||
285 | void PNGAPI | ||
286 | png_set_pCAL(png_structp png_ptr, png_infop info_ptr, | ||
287 | png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type, | ||
288 | int nparams, png_const_charp units, png_charpp params) | ||
289 | { | ||
290 | png_size_t length; | ||
291 | int i; | ||
292 | |||
293 | png_debug1(1, "in %s storage function", "pCAL"); | ||
294 | |||
295 | if (png_ptr == NULL || info_ptr == NULL) | ||
296 | return; | ||
297 | |||
298 | length = png_strlen(purpose) + 1; | ||
299 | png_debug1(3, "allocating purpose for info (%lu bytes)", | ||
300 | (unsigned long)length); | ||
301 | |||
302 | /* TODO: validate format of calibration name and unit name */ | ||
303 | |||
304 | /* Check that the type matches the specification. */ | ||
305 | if (type < 0 || type > 3) | ||
306 | png_error(png_ptr, "Invalid pCAL equation type"); | ||
307 | |||
308 | /* Validate params[nparams] */ | ||
309 | for (i=0; i<nparams; ++i) | ||
310 | if (!png_check_fp_string(params[i], png_strlen(params[i]))) | ||
311 | png_error(png_ptr, "Invalid format for pCAL parameter"); | ||
312 | |||
313 | info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length); | ||
314 | |||
315 | if (info_ptr->pcal_purpose == NULL) | ||
316 | { | ||
317 | png_warning(png_ptr, "Insufficient memory for pCAL purpose"); | ||
318 | return; | ||
319 | } | ||
320 | |||
321 | png_memcpy(info_ptr->pcal_purpose, purpose, length); | ||
322 | |||
323 | png_debug(3, "storing X0, X1, type, and nparams in info"); | ||
324 | info_ptr->pcal_X0 = X0; | ||
325 | info_ptr->pcal_X1 = X1; | ||
326 | info_ptr->pcal_type = (png_byte)type; | ||
327 | info_ptr->pcal_nparams = (png_byte)nparams; | ||
328 | |||
329 | length = png_strlen(units) + 1; | ||
330 | png_debug1(3, "allocating units for info (%lu bytes)", | ||
331 | (unsigned long)length); | ||
332 | |||
333 | info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length); | ||
334 | |||
335 | if (info_ptr->pcal_units == NULL) | ||
336 | { | ||
337 | png_warning(png_ptr, "Insufficient memory for pCAL units"); | ||
338 | return; | ||
339 | } | ||
340 | |||
341 | png_memcpy(info_ptr->pcal_units, units, length); | ||
342 | |||
343 | info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr, | ||
344 | (png_size_t)((nparams + 1) * png_sizeof(png_charp))); | ||
345 | |||
346 | if (info_ptr->pcal_params == NULL) | ||
347 | { | ||
348 | png_warning(png_ptr, "Insufficient memory for pCAL params"); | ||
349 | return; | ||
350 | } | ||
351 | |||
352 | png_memset(info_ptr->pcal_params, 0, (nparams + 1) * png_sizeof(png_charp)); | ||
353 | |||
354 | for (i = 0; i < nparams; i++) | ||
355 | { | ||
356 | length = png_strlen(params[i]) + 1; | ||
357 | png_debug2(3, "allocating parameter %d for info (%lu bytes)", i, | ||
358 | (unsigned long)length); | ||
359 | |||
360 | info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length); | ||
361 | |||
362 | if (info_ptr->pcal_params[i] == NULL) | ||
363 | { | ||
364 | png_warning(png_ptr, "Insufficient memory for pCAL parameter"); | ||
365 | return; | ||
366 | } | ||
367 | |||
368 | png_memcpy(info_ptr->pcal_params[i], params[i], length); | ||
369 | } | ||
370 | |||
371 | info_ptr->valid |= PNG_INFO_pCAL; | ||
372 | info_ptr->free_me |= PNG_FREE_PCAL; | ||
373 | } | ||
374 | #endif | ||
375 | |||
376 | #ifdef PNG_sCAL_SUPPORTED | ||
377 | void PNGAPI | ||
378 | png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr, | ||
379 | int unit, png_const_charp swidth, png_const_charp sheight) | ||
380 | { | ||
381 | png_size_t lengthw = 0, lengthh = 0; | ||
382 | |||
383 | png_debug1(1, "in %s storage function", "sCAL"); | ||
384 | |||
385 | if (png_ptr == NULL || info_ptr == NULL) | ||
386 | return; | ||
387 | |||
388 | /* Double check the unit (should never get here with an invalid | ||
389 | * unit unless this is an API call.) | ||
390 | */ | ||
391 | if (unit != 1 && unit != 2) | ||
392 | png_error(png_ptr, "Invalid sCAL unit"); | ||
393 | |||
394 | if (swidth == NULL || (lengthw = png_strlen(swidth)) == 0 || | ||
395 | swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw)) | ||
396 | png_error(png_ptr, "Invalid sCAL width"); | ||
397 | |||
398 | if (sheight == NULL || (lengthh = png_strlen(sheight)) == 0 || | ||
399 | sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh)) | ||
400 | png_error(png_ptr, "Invalid sCAL height"); | ||
401 | |||
402 | info_ptr->scal_unit = (png_byte)unit; | ||
403 | |||
404 | ++lengthw; | ||
405 | |||
406 | png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw); | ||
407 | |||
408 | info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, lengthw); | ||
409 | |||
410 | if (info_ptr->scal_s_width == NULL) | ||
411 | { | ||
412 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); | ||
413 | return; | ||
414 | } | ||
415 | |||
416 | png_memcpy(info_ptr->scal_s_width, swidth, lengthw); | ||
417 | |||
418 | ++lengthh; | ||
419 | |||
420 | png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh); | ||
421 | |||
422 | info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, lengthh); | ||
423 | |||
424 | if (info_ptr->scal_s_height == NULL) | ||
425 | { | ||
426 | png_free (png_ptr, info_ptr->scal_s_width); | ||
427 | info_ptr->scal_s_width = NULL; | ||
428 | |||
429 | png_warning(png_ptr, "Memory allocation failed while processing sCAL"); | ||
430 | return; | ||
431 | } | ||
432 | |||
433 | png_memcpy(info_ptr->scal_s_height, sheight, lengthh); | ||
434 | |||
435 | info_ptr->valid |= PNG_INFO_sCAL; | ||
436 | info_ptr->free_me |= PNG_FREE_SCAL; | ||
437 | } | ||
438 | |||
439 | # ifdef PNG_FLOATING_POINT_SUPPORTED | ||
440 | void PNGAPI | ||
441 | png_set_sCAL(png_structp png_ptr, png_infop info_ptr, int unit, double width, | ||
442 | double height) | ||
443 | { | ||
444 | png_debug1(1, "in %s storage function", "sCAL"); | ||
445 | |||
446 | /* Check the arguments. */ | ||
447 | if (width <= 0) | ||
448 | png_warning(png_ptr, "Invalid sCAL width ignored"); | ||
449 | |||
450 | else if (height <= 0) | ||
451 | png_warning(png_ptr, "Invalid sCAL height ignored"); | ||
452 | |||
453 | else | ||
454 | { | ||
455 | /* Convert 'width' and 'height' to ASCII. */ | ||
456 | char swidth[PNG_sCAL_MAX_DIGITS+1]; | ||
457 | char sheight[PNG_sCAL_MAX_DIGITS+1]; | ||
458 | |||
459 | png_ascii_from_fp(png_ptr, swidth, sizeof swidth, width, | ||
460 | PNG_sCAL_PRECISION); | ||
461 | png_ascii_from_fp(png_ptr, sheight, sizeof sheight, height, | ||
462 | PNG_sCAL_PRECISION); | ||
463 | |||
464 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); | ||
465 | } | ||
466 | } | ||
467 | # endif | ||
468 | |||
469 | # ifdef PNG_FIXED_POINT_SUPPORTED | ||
470 | void PNGAPI | ||
471 | png_set_sCAL_fixed(png_structp png_ptr, png_infop info_ptr, int unit, | ||
472 | png_fixed_point width, png_fixed_point height) | ||
473 | { | ||
474 | png_debug1(1, "in %s storage function", "sCAL"); | ||
475 | |||
476 | /* Check the arguments. */ | ||
477 | if (width <= 0) | ||
478 | png_warning(png_ptr, "Invalid sCAL width ignored"); | ||
479 | |||
480 | else if (height <= 0) | ||
481 | png_warning(png_ptr, "Invalid sCAL height ignored"); | ||
482 | |||
483 | else | ||
484 | { | ||
485 | /* Convert 'width' and 'height' to ASCII. */ | ||
486 | char swidth[PNG_sCAL_MAX_DIGITS+1]; | ||
487 | char sheight[PNG_sCAL_MAX_DIGITS+1]; | ||
488 | |||
489 | png_ascii_from_fixed(png_ptr, swidth, sizeof swidth, width); | ||
490 | png_ascii_from_fixed(png_ptr, sheight, sizeof sheight, height); | ||
491 | |||
492 | png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight); | ||
493 | } | ||
494 | } | ||
495 | # endif | ||
496 | #endif | ||
497 | |||
498 | #ifdef PNG_pHYs_SUPPORTED | ||
499 | void PNGAPI | ||
500 | png_set_pHYs(png_structp png_ptr, png_infop info_ptr, | ||
501 | png_uint_32 res_x, png_uint_32 res_y, int unit_type) | ||
502 | { | ||
503 | png_debug1(1, "in %s storage function", "pHYs"); | ||
504 | |||
505 | if (png_ptr == NULL || info_ptr == NULL) | ||
506 | return; | ||
507 | |||
508 | info_ptr->x_pixels_per_unit = res_x; | ||
509 | info_ptr->y_pixels_per_unit = res_y; | ||
510 | info_ptr->phys_unit_type = (png_byte)unit_type; | ||
511 | info_ptr->valid |= PNG_INFO_pHYs; | ||
512 | } | ||
513 | #endif | ||
514 | |||
515 | void PNGAPI | ||
516 | png_set_PLTE(png_structp png_ptr, png_infop info_ptr, | ||
517 | png_const_colorp palette, int num_palette) | ||
518 | { | ||
519 | |||
520 | png_debug1(1, "in %s storage function", "PLTE"); | ||
521 | |||
522 | if (png_ptr == NULL || info_ptr == NULL) | ||
523 | return; | ||
524 | |||
525 | if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH) | ||
526 | { | ||
527 | if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE) | ||
528 | png_error(png_ptr, "Invalid palette length"); | ||
529 | |||
530 | else | ||
531 | { | ||
532 | png_warning(png_ptr, "Invalid palette length"); | ||
533 | return; | ||
534 | } | ||
535 | } | ||
536 | |||
537 | /* It may not actually be necessary to set png_ptr->palette here; | ||
538 | * we do it for backward compatibility with the way the png_handle_tRNS | ||
539 | * function used to do the allocation. | ||
540 | */ | ||
541 | png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0); | ||
542 | |||
543 | /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead | ||
544 | * of num_palette entries, in case of an invalid PNG file that has | ||
545 | * too-large sample values. | ||
546 | */ | ||
547 | png_ptr->palette = (png_colorp)png_calloc(png_ptr, | ||
548 | PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color)); | ||
549 | |||
550 | png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color)); | ||
551 | info_ptr->palette = png_ptr->palette; | ||
552 | info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette; | ||
553 | |||
554 | info_ptr->free_me |= PNG_FREE_PLTE; | ||
555 | |||
556 | info_ptr->valid |= PNG_INFO_PLTE; | ||
557 | } | ||
558 | |||
559 | #ifdef PNG_sBIT_SUPPORTED | ||
560 | void PNGAPI | ||
561 | png_set_sBIT(png_structp png_ptr, png_infop info_ptr, | ||
562 | png_const_color_8p sig_bit) | ||
563 | { | ||
564 | png_debug1(1, "in %s storage function", "sBIT"); | ||
565 | |||
566 | if (png_ptr == NULL || info_ptr == NULL) | ||
567 | return; | ||
568 | |||
569 | png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8)); | ||
570 | info_ptr->valid |= PNG_INFO_sBIT; | ||
571 | } | ||
572 | #endif | ||
573 | |||
574 | #ifdef PNG_sRGB_SUPPORTED | ||
575 | void PNGAPI | ||
576 | png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int srgb_intent) | ||
577 | { | ||
578 | png_debug1(1, "in %s storage function", "sRGB"); | ||
579 | |||
580 | if (png_ptr == NULL || info_ptr == NULL) | ||
581 | return; | ||
582 | |||
583 | info_ptr->srgb_intent = (png_byte)srgb_intent; | ||
584 | info_ptr->valid |= PNG_INFO_sRGB; | ||
585 | } | ||
586 | |||
587 | void PNGAPI | ||
588 | png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, | ||
589 | int srgb_intent) | ||
590 | { | ||
591 | png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM"); | ||
592 | |||
593 | if (png_ptr == NULL || info_ptr == NULL) | ||
594 | return; | ||
595 | |||
596 | png_set_sRGB(png_ptr, info_ptr, srgb_intent); | ||
597 | |||
598 | # ifdef PNG_gAMA_SUPPORTED | ||
599 | png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_sRGB_INVERSE); | ||
600 | # endif | ||
601 | |||
602 | # ifdef PNG_cHRM_SUPPORTED | ||
603 | png_set_cHRM_fixed(png_ptr, info_ptr, | ||
604 | /* color x y */ | ||
605 | /* white */ 31270, 32900, | ||
606 | /* red */ 64000, 33000, | ||
607 | /* green */ 30000, 60000, | ||
608 | /* blue */ 15000, 6000 | ||
609 | ); | ||
610 | # endif /* cHRM */ | ||
611 | } | ||
612 | #endif /* sRGB */ | ||
613 | |||
614 | |||
615 | #ifdef PNG_iCCP_SUPPORTED | ||
616 | void PNGAPI | ||
617 | png_set_iCCP(png_structp png_ptr, png_infop info_ptr, | ||
618 | png_const_charp name, int compression_type, | ||
619 | png_const_bytep profile, png_uint_32 proflen) | ||
620 | { | ||
621 | png_charp new_iccp_name; | ||
622 | png_bytep new_iccp_profile; | ||
623 | png_size_t length; | ||
624 | |||
625 | png_debug1(1, "in %s storage function", "iCCP"); | ||
626 | |||
627 | if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL) | ||
628 | return; | ||
629 | |||
630 | length = png_strlen(name)+1; | ||
631 | new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length); | ||
632 | |||
633 | if (new_iccp_name == NULL) | ||
634 | { | ||
635 | png_warning(png_ptr, "Insufficient memory to process iCCP chunk"); | ||
636 | return; | ||
637 | } | ||
638 | |||
639 | png_memcpy(new_iccp_name, name, length); | ||
640 | new_iccp_profile = (png_bytep)png_malloc_warn(png_ptr, proflen); | ||
641 | |||
642 | if (new_iccp_profile == NULL) | ||
643 | { | ||
644 | png_free (png_ptr, new_iccp_name); | ||
645 | png_warning(png_ptr, | ||
646 | "Insufficient memory to process iCCP profile"); | ||
647 | return; | ||
648 | } | ||
649 | |||
650 | png_memcpy(new_iccp_profile, profile, (png_size_t)proflen); | ||
651 | |||
652 | png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0); | ||
653 | |||
654 | info_ptr->iccp_proflen = proflen; | ||
655 | info_ptr->iccp_name = new_iccp_name; | ||
656 | info_ptr->iccp_profile = new_iccp_profile; | ||
657 | /* Compression is always zero but is here so the API and info structure | ||
658 | * does not have to change if we introduce multiple compression types | ||
659 | */ | ||
660 | info_ptr->iccp_compression = (png_byte)compression_type; | ||
661 | info_ptr->free_me |= PNG_FREE_ICCP; | ||
662 | info_ptr->valid |= PNG_INFO_iCCP; | ||
663 | } | ||
664 | #endif | ||
665 | |||
666 | #ifdef PNG_TEXT_SUPPORTED | ||
667 | void PNGAPI | ||
668 | png_set_text(png_structp png_ptr, png_infop info_ptr, png_const_textp text_ptr, | ||
669 | int num_text) | ||
670 | { | ||
671 | int ret; | ||
672 | ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text); | ||
673 | |||
674 | if (ret) | ||
675 | png_error(png_ptr, "Insufficient memory to store text"); | ||
676 | } | ||
677 | |||
678 | int /* PRIVATE */ | ||
679 | png_set_text_2(png_structp png_ptr, png_infop info_ptr, | ||
680 | png_const_textp text_ptr, int num_text) | ||
681 | { | ||
682 | int i; | ||
683 | |||
684 | png_debug1(1, "in %lx storage function", png_ptr == NULL ? "unexpected" : | ||
685 | (unsigned long)png_ptr->chunk_name); | ||
686 | |||
687 | if (png_ptr == NULL || info_ptr == NULL || num_text == 0) | ||
688 | return(0); | ||
689 | |||
690 | /* Make sure we have enough space in the "text" array in info_struct | ||
691 | * to hold all of the incoming text_ptr objects. | ||
692 | */ | ||
693 | if (info_ptr->num_text + num_text > info_ptr->max_text) | ||
694 | { | ||
695 | if (info_ptr->text != NULL) | ||
696 | { | ||
697 | png_textp old_text; | ||
698 | int old_max; | ||
699 | |||
700 | old_max = info_ptr->max_text; | ||
701 | info_ptr->max_text = info_ptr->num_text + num_text + 8; | ||
702 | old_text = info_ptr->text; | ||
703 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, | ||
704 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); | ||
705 | |||
706 | if (info_ptr->text == NULL) | ||
707 | { | ||
708 | png_free(png_ptr, old_text); | ||
709 | return(1); | ||
710 | } | ||
711 | |||
712 | png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max * | ||
713 | png_sizeof(png_text))); | ||
714 | png_free(png_ptr, old_text); | ||
715 | } | ||
716 | |||
717 | else | ||
718 | { | ||
719 | info_ptr->max_text = num_text + 8; | ||
720 | info_ptr->num_text = 0; | ||
721 | info_ptr->text = (png_textp)png_malloc_warn(png_ptr, | ||
722 | (png_size_t)(info_ptr->max_text * png_sizeof(png_text))); | ||
723 | if (info_ptr->text == NULL) | ||
724 | return(1); | ||
725 | info_ptr->free_me |= PNG_FREE_TEXT; | ||
726 | } | ||
727 | |||
728 | png_debug1(3, "allocated %d entries for info_ptr->text", | ||
729 | info_ptr->max_text); | ||
730 | } | ||
731 | for (i = 0; i < num_text; i++) | ||
732 | { | ||
733 | png_size_t text_length, key_len; | ||
734 | png_size_t lang_len, lang_key_len; | ||
735 | png_textp textp = &(info_ptr->text[info_ptr->num_text]); | ||
736 | |||
737 | if (text_ptr[i].key == NULL) | ||
738 | continue; | ||
739 | |||
740 | if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE || | ||
741 | text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST) | ||
742 | { | ||
743 | png_warning(png_ptr, "text compression mode is out of range"); | ||
744 | continue; | ||
745 | } | ||
746 | |||
747 | key_len = png_strlen(text_ptr[i].key); | ||
748 | |||
749 | if (text_ptr[i].compression <= 0) | ||
750 | { | ||
751 | lang_len = 0; | ||
752 | lang_key_len = 0; | ||
753 | } | ||
754 | |||
755 | else | ||
756 | # ifdef PNG_iTXt_SUPPORTED | ||
757 | { | ||
758 | /* Set iTXt data */ | ||
759 | |||
760 | if (text_ptr[i].lang != NULL) | ||
761 | lang_len = png_strlen(text_ptr[i].lang); | ||
762 | |||
763 | else | ||
764 | lang_len = 0; | ||
765 | |||
766 | if (text_ptr[i].lang_key != NULL) | ||
767 | lang_key_len = png_strlen(text_ptr[i].lang_key); | ||
768 | |||
769 | else | ||
770 | lang_key_len = 0; | ||
771 | } | ||
772 | # else /* PNG_iTXt_SUPPORTED */ | ||
773 | { | ||
774 | png_warning(png_ptr, "iTXt chunk not supported"); | ||
775 | continue; | ||
776 | } | ||
777 | # endif | ||
778 | |||
779 | if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0') | ||
780 | { | ||
781 | text_length = 0; | ||
782 | # ifdef PNG_iTXt_SUPPORTED | ||
783 | if (text_ptr[i].compression > 0) | ||
784 | textp->compression = PNG_ITXT_COMPRESSION_NONE; | ||
785 | |||
786 | else | ||
787 | # endif | ||
788 | textp->compression = PNG_TEXT_COMPRESSION_NONE; | ||
789 | } | ||
790 | |||
791 | else | ||
792 | { | ||
793 | text_length = png_strlen(text_ptr[i].text); | ||
794 | textp->compression = text_ptr[i].compression; | ||
795 | } | ||
796 | |||
797 | textp->key = (png_charp)png_malloc_warn(png_ptr, | ||
798 | (png_size_t) | ||
799 | (key_len + text_length + lang_len + lang_key_len + 4)); | ||
800 | |||
801 | if (textp->key == NULL) | ||
802 | return(1); | ||
803 | |||
804 | png_debug2(2, "Allocated %lu bytes at %p in png_set_text", | ||
805 | (unsigned long)(png_uint_32) | ||
806 | (key_len + lang_len + lang_key_len + text_length + 4), | ||
807 | textp->key); | ||
808 | |||
809 | png_memcpy(textp->key, text_ptr[i].key,(png_size_t)(key_len)); | ||
810 | *(textp->key + key_len) = '\0'; | ||
811 | |||
812 | if (text_ptr[i].compression > 0) | ||
813 | { | ||
814 | textp->lang = textp->key + key_len + 1; | ||
815 | png_memcpy(textp->lang, text_ptr[i].lang, lang_len); | ||
816 | *(textp->lang + lang_len) = '\0'; | ||
817 | textp->lang_key = textp->lang + lang_len + 1; | ||
818 | png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len); | ||
819 | *(textp->lang_key + lang_key_len) = '\0'; | ||
820 | textp->text = textp->lang_key + lang_key_len + 1; | ||
821 | } | ||
822 | |||
823 | else | ||
824 | { | ||
825 | textp->lang=NULL; | ||
826 | textp->lang_key=NULL; | ||
827 | textp->text = textp->key + key_len + 1; | ||
828 | } | ||
829 | |||
830 | if (text_length) | ||
831 | png_memcpy(textp->text, text_ptr[i].text, | ||
832 | (png_size_t)(text_length)); | ||
833 | |||
834 | *(textp->text + text_length) = '\0'; | ||
835 | |||
836 | # ifdef PNG_iTXt_SUPPORTED | ||
837 | if (textp->compression > 0) | ||
838 | { | ||
839 | textp->text_length = 0; | ||
840 | textp->itxt_length = text_length; | ||
841 | } | ||
842 | |||
843 | else | ||
844 | # endif | ||
845 | { | ||
846 | textp->text_length = text_length; | ||
847 | textp->itxt_length = 0; | ||
848 | } | ||
849 | |||
850 | info_ptr->num_text++; | ||
851 | png_debug1(3, "transferred text chunk %d", info_ptr->num_text); | ||
852 | } | ||
853 | return(0); | ||
854 | } | ||
855 | #endif | ||
856 | |||
857 | #ifdef PNG_tIME_SUPPORTED | ||
858 | void PNGAPI | ||
859 | png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_const_timep mod_time) | ||
860 | { | ||
861 | png_debug1(1, "in %s storage function", "tIME"); | ||
862 | |||
863 | if (png_ptr == NULL || info_ptr == NULL || | ||
864 | (png_ptr->mode & PNG_WROTE_tIME)) | ||
865 | return; | ||
866 | |||
867 | if (mod_time->month == 0 || mod_time->month > 12 || | ||
868 | mod_time->day == 0 || mod_time->day > 31 || | ||
869 | mod_time->hour > 23 || mod_time->minute > 59 || | ||
870 | mod_time->second > 60) | ||
871 | { | ||
872 | png_warning(png_ptr, "Ignoring invalid time value"); | ||
873 | return; | ||
874 | } | ||
875 | |||
876 | png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time)); | ||
877 | info_ptr->valid |= PNG_INFO_tIME; | ||
878 | } | ||
879 | #endif | ||
880 | |||
881 | #ifdef PNG_tRNS_SUPPORTED | ||
882 | void PNGAPI | ||
883 | png_set_tRNS(png_structp png_ptr, png_infop info_ptr, | ||
884 | png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color) | ||
885 | { | ||
886 | png_debug1(1, "in %s storage function", "tRNS"); | ||
887 | |||
888 | if (png_ptr == NULL || info_ptr == NULL) | ||
889 | return; | ||
890 | |||
891 | if (trans_alpha != NULL) | ||
892 | { | ||
893 | /* It may not actually be necessary to set png_ptr->trans_alpha here; | ||
894 | * we do it for backward compatibility with the way the png_handle_tRNS | ||
895 | * function used to do the allocation. | ||
896 | */ | ||
897 | |||
898 | png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0); | ||
899 | |||
900 | /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */ | ||
901 | png_ptr->trans_alpha = info_ptr->trans_alpha = | ||
902 | (png_bytep)png_malloc(png_ptr, (png_size_t)PNG_MAX_PALETTE_LENGTH); | ||
903 | |||
904 | if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH) | ||
905 | png_memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans); | ||
906 | } | ||
907 | |||
908 | if (trans_color != NULL) | ||
909 | { | ||
910 | int sample_max = (1 << info_ptr->bit_depth); | ||
911 | |||
912 | if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY && | ||
913 | (int)trans_color->gray > sample_max) || | ||
914 | (info_ptr->color_type == PNG_COLOR_TYPE_RGB && | ||
915 | ((int)trans_color->red > sample_max || | ||
916 | (int)trans_color->green > sample_max || | ||
917 | (int)trans_color->blue > sample_max))) | ||
918 | png_warning(png_ptr, | ||
919 | "tRNS chunk has out-of-range samples for bit_depth"); | ||
920 | |||
921 | png_memcpy(&(info_ptr->trans_color), trans_color, | ||
922 | png_sizeof(png_color_16)); | ||
923 | |||
924 | if (num_trans == 0) | ||
925 | num_trans = 1; | ||
926 | } | ||
927 | |||
928 | info_ptr->num_trans = (png_uint_16)num_trans; | ||
929 | |||
930 | if (num_trans != 0) | ||
931 | { | ||
932 | info_ptr->valid |= PNG_INFO_tRNS; | ||
933 | info_ptr->free_me |= PNG_FREE_TRNS; | ||
934 | } | ||
935 | } | ||
936 | #endif | ||
937 | |||
938 | #ifdef PNG_sPLT_SUPPORTED | ||
939 | void PNGAPI | ||
940 | png_set_sPLT(png_structp png_ptr, | ||
941 | png_infop info_ptr, png_const_sPLT_tp entries, int nentries) | ||
942 | /* | ||
943 | * entries - array of png_sPLT_t structures | ||
944 | * to be added to the list of palettes | ||
945 | * in the info structure. | ||
946 | * | ||
947 | * nentries - number of palette structures to be | ||
948 | * added. | ||
949 | */ | ||
950 | { | ||
951 | png_sPLT_tp np; | ||
952 | int i; | ||
953 | |||
954 | if (png_ptr == NULL || info_ptr == NULL) | ||
955 | return; | ||
956 | |||
957 | np = (png_sPLT_tp)png_malloc_warn(png_ptr, | ||
958 | (info_ptr->splt_palettes_num + nentries) * | ||
959 | (png_size_t)png_sizeof(png_sPLT_t)); | ||
960 | |||
961 | if (np == NULL) | ||
962 | { | ||
963 | png_warning(png_ptr, "No memory for sPLT palettes"); | ||
964 | return; | ||
965 | } | ||
966 | |||
967 | png_memcpy(np, info_ptr->splt_palettes, | ||
968 | info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t)); | ||
969 | |||
970 | png_free(png_ptr, info_ptr->splt_palettes); | ||
971 | info_ptr->splt_palettes=NULL; | ||
972 | |||
973 | for (i = 0; i < nentries; i++) | ||
974 | { | ||
975 | png_sPLT_tp to = np + info_ptr->splt_palettes_num + i; | ||
976 | png_const_sPLT_tp from = entries + i; | ||
977 | png_size_t length; | ||
978 | |||
979 | length = png_strlen(from->name) + 1; | ||
980 | to->name = (png_charp)png_malloc_warn(png_ptr, length); | ||
981 | |||
982 | if (to->name == NULL) | ||
983 | { | ||
984 | png_warning(png_ptr, | ||
985 | "Out of memory while processing sPLT chunk"); | ||
986 | continue; | ||
987 | } | ||
988 | |||
989 | png_memcpy(to->name, from->name, length); | ||
990 | to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr, | ||
991 | from->nentries * png_sizeof(png_sPLT_entry)); | ||
992 | |||
993 | if (to->entries == NULL) | ||
994 | { | ||
995 | png_warning(png_ptr, | ||
996 | "Out of memory while processing sPLT chunk"); | ||
997 | png_free(png_ptr, to->name); | ||
998 | to->name = NULL; | ||
999 | continue; | ||
1000 | } | ||
1001 | |||
1002 | png_memcpy(to->entries, from->entries, | ||
1003 | from->nentries * png_sizeof(png_sPLT_entry)); | ||
1004 | |||
1005 | to->nentries = from->nentries; | ||
1006 | to->depth = from->depth; | ||
1007 | } | ||
1008 | |||
1009 | info_ptr->splt_palettes = np; | ||
1010 | info_ptr->splt_palettes_num += nentries; | ||
1011 | info_ptr->valid |= PNG_INFO_sPLT; | ||
1012 | info_ptr->free_me |= PNG_FREE_SPLT; | ||
1013 | } | ||
1014 | #endif /* PNG_sPLT_SUPPORTED */ | ||
1015 | |||
1016 | #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED | ||
1017 | void PNGAPI | ||
1018 | png_set_unknown_chunks(png_structp png_ptr, | ||
1019 | png_infop info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns) | ||
1020 | { | ||
1021 | png_unknown_chunkp np; | ||
1022 | int i; | ||
1023 | |||
1024 | if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0) | ||
1025 | return; | ||
1026 | |||
1027 | np = (png_unknown_chunkp)png_malloc_warn(png_ptr, | ||
1028 | (png_size_t)(info_ptr->unknown_chunks_num + num_unknowns) * | ||
1029 | png_sizeof(png_unknown_chunk)); | ||
1030 | |||
1031 | if (np == NULL) | ||
1032 | { | ||
1033 | png_warning(png_ptr, | ||
1034 | "Out of memory while processing unknown chunk"); | ||
1035 | return; | ||
1036 | } | ||
1037 | |||
1038 | png_memcpy(np, info_ptr->unknown_chunks, | ||
1039 | (png_size_t)info_ptr->unknown_chunks_num * | ||
1040 | png_sizeof(png_unknown_chunk)); | ||
1041 | |||
1042 | png_free(png_ptr, info_ptr->unknown_chunks); | ||
1043 | info_ptr->unknown_chunks = NULL; | ||
1044 | |||
1045 | for (i = 0; i < num_unknowns; i++) | ||
1046 | { | ||
1047 | png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i; | ||
1048 | png_const_unknown_chunkp from = unknowns + i; | ||
1049 | |||
1050 | png_memcpy(to->name, from->name, png_sizeof(from->name)); | ||
1051 | to->name[png_sizeof(to->name)-1] = '\0'; | ||
1052 | to->size = from->size; | ||
1053 | |||
1054 | /* Note our location in the read or write sequence */ | ||
1055 | to->location = (png_byte)(png_ptr->mode & 0xff); | ||
1056 | |||
1057 | if (from->size == 0) | ||
1058 | to->data=NULL; | ||
1059 | |||
1060 | else | ||
1061 | { | ||
1062 | to->data = (png_bytep)png_malloc_warn(png_ptr, | ||
1063 | (png_size_t)from->size); | ||
1064 | |||
1065 | if (to->data == NULL) | ||
1066 | { | ||
1067 | png_warning(png_ptr, | ||
1068 | "Out of memory while processing unknown chunk"); | ||
1069 | to->size = 0; | ||
1070 | } | ||
1071 | |||
1072 | else | ||
1073 | png_memcpy(to->data, from->data, from->size); | ||
1074 | } | ||
1075 | } | ||
1076 | |||
1077 | info_ptr->unknown_chunks = np; | ||
1078 | info_ptr->unknown_chunks_num += num_unknowns; | ||
1079 | info_ptr->free_me |= PNG_FREE_UNKN; | ||
1080 | } | ||
1081 | |||
1082 | void PNGAPI | ||
1083 | png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, | ||
1084 | int chunk, int location) | ||
1085 | { | ||
1086 | if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk < | ||
1087 | info_ptr->unknown_chunks_num) | ||
1088 | info_ptr->unknown_chunks[chunk].location = (png_byte)location; | ||
1089 | } | ||
1090 | #endif | ||
1091 | |||
1092 | |||
1093 | #ifdef PNG_MNG_FEATURES_SUPPORTED | ||
1094 | png_uint_32 PNGAPI | ||
1095 | png_permit_mng_features (png_structp png_ptr, png_uint_32 mng_features) | ||
1096 | { | ||
1097 | png_debug(1, "in png_permit_mng_features"); | ||
1098 | |||
1099 | if (png_ptr == NULL) | ||
1100 | return (png_uint_32)0; | ||
1101 | |||
1102 | png_ptr->mng_features_permitted = | ||
1103 | (png_byte)(mng_features & PNG_ALL_MNG_FEATURES); | ||
1104 | |||
1105 | return (png_uint_32)png_ptr->mng_features_permitted; | ||
1106 | } | ||
1107 | #endif | ||
1108 | |||
1109 | #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED | ||
1110 | void PNGAPI | ||
1111 | png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_const_bytep | ||
1112 | chunk_list, int num_chunks) | ||
1113 | { | ||
1114 | png_bytep new_list, p; | ||
1115 | int i, old_num_chunks; | ||
1116 | if (png_ptr == NULL) | ||
1117 | return; | ||
1118 | |||
1119 | if (num_chunks == 0) | ||
1120 | { | ||
1121 | if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE) | ||
1122 | png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS; | ||
1123 | |||
1124 | else | ||
1125 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS; | ||
1126 | |||
1127 | if (keep == PNG_HANDLE_CHUNK_ALWAYS) | ||
1128 | png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS; | ||
1129 | |||
1130 | else | ||
1131 | png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS; | ||
1132 | |||
1133 | return; | ||
1134 | } | ||
1135 | |||
1136 | if (chunk_list == NULL) | ||
1137 | return; | ||
1138 | |||
1139 | old_num_chunks = png_ptr->num_chunk_list; | ||
1140 | new_list=(png_bytep)png_malloc(png_ptr, | ||
1141 | (png_size_t)(5*(num_chunks + old_num_chunks))); | ||
1142 | |||
1143 | if (png_ptr->chunk_list != NULL) | ||
1144 | { | ||
1145 | png_memcpy(new_list, png_ptr->chunk_list, | ||
1146 | (png_size_t)(5*old_num_chunks)); | ||
1147 | png_free(png_ptr, png_ptr->chunk_list); | ||
1148 | png_ptr->chunk_list=NULL; | ||
1149 | } | ||
1150 | |||
1151 | png_memcpy(new_list + 5*old_num_chunks, chunk_list, | ||
1152 | (png_size_t)(5*num_chunks)); | ||
1153 | |||
1154 | for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5) | ||
1155 | *p=(png_byte)keep; | ||
1156 | |||
1157 | png_ptr->num_chunk_list = old_num_chunks + num_chunks; | ||
1158 | png_ptr->chunk_list = new_list; | ||
1159 | png_ptr->free_me |= PNG_FREE_LIST; | ||
1160 | } | ||
1161 | #endif | ||
1162 | |||
1163 | #ifdef PNG_READ_USER_CHUNKS_SUPPORTED | ||
1164 | void PNGAPI | ||
1165 | png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, | ||
1166 | png_user_chunk_ptr read_user_chunk_fn) | ||
1167 | { | ||
1168 | png_debug(1, "in png_set_read_user_chunk_fn"); | ||
1169 | |||
1170 | if (png_ptr == NULL) | ||
1171 | return; | ||
1172 | |||
1173 | png_ptr->read_user_chunk_fn = read_user_chunk_fn; | ||
1174 | png_ptr->user_chunk_ptr = user_chunk_ptr; | ||
1175 | } | ||
1176 | #endif | ||
1177 | |||
1178 | #ifdef PNG_INFO_IMAGE_SUPPORTED | ||
1179 | void PNGAPI | ||
1180 | png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers) | ||
1181 | { | ||
1182 | png_debug1(1, "in %s storage function", "rows"); | ||
1183 | |||
1184 | if (png_ptr == NULL || info_ptr == NULL) | ||
1185 | return; | ||
1186 | |||
1187 | if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers)) | ||
1188 | png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0); | ||
1189 | |||
1190 | info_ptr->row_pointers = row_pointers; | ||
1191 | |||
1192 | if (row_pointers) | ||
1193 | info_ptr->valid |= PNG_INFO_IDAT; | ||
1194 | } | ||
1195 | #endif | ||
1196 | |||
1197 | void PNGAPI | ||
1198 | png_set_compression_buffer_size(png_structp png_ptr, png_size_t size) | ||
1199 | { | ||
1200 | if (png_ptr == NULL) | ||
1201 | return; | ||
1202 | |||
1203 | png_free(png_ptr, png_ptr->zbuf); | ||
1204 | |||
1205 | if (size > ZLIB_IO_MAX) | ||
1206 | { | ||
1207 | png_warning(png_ptr, "Attempt to set buffer size beyond max ignored"); | ||
1208 | png_ptr->zbuf_size = ZLIB_IO_MAX; | ||
1209 | size = ZLIB_IO_MAX; /* must fit */ | ||
1210 | } | ||
1211 | |||
1212 | else | ||
1213 | png_ptr->zbuf_size = (uInt)size; | ||
1214 | |||
1215 | png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size); | ||
1216 | |||
1217 | /* The following ensures a relatively safe failure if this gets called while | ||
1218 | * the buffer is actually in use. | ||
1219 | */ | ||
1220 | png_ptr->zstream.next_out = png_ptr->zbuf; | ||
1221 | png_ptr->zstream.avail_out = 0; | ||
1222 | png_ptr->zstream.avail_in = 0; | ||
1223 | } | ||
1224 | |||
1225 | void PNGAPI | ||
1226 | png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask) | ||
1227 | { | ||
1228 | if (png_ptr && info_ptr) | ||
1229 | info_ptr->valid &= ~mask; | ||
1230 | } | ||
1231 | |||
1232 | |||
1233 | |||
1234 | #ifdef PNG_SET_USER_LIMITS_SUPPORTED | ||
1235 | /* This function was added to libpng 1.2.6 */ | ||
1236 | void PNGAPI | ||
1237 | png_set_user_limits (png_structp png_ptr, png_uint_32 user_width_max, | ||
1238 | png_uint_32 user_height_max) | ||
1239 | { | ||
1240 | /* Images with dimensions larger than these limits will be | ||
1241 | * rejected by png_set_IHDR(). To accept any PNG datastream | ||
1242 | * regardless of dimensions, set both limits to 0x7ffffffL. | ||
1243 | */ | ||
1244 | if (png_ptr == NULL) | ||
1245 | return; | ||
1246 | |||
1247 | png_ptr->user_width_max = user_width_max; | ||
1248 | png_ptr->user_height_max = user_height_max; | ||
1249 | } | ||
1250 | |||
1251 | /* This function was added to libpng 1.4.0 */ | ||
1252 | void PNGAPI | ||
1253 | png_set_chunk_cache_max (png_structp png_ptr, | ||
1254 | png_uint_32 user_chunk_cache_max) | ||
1255 | { | ||
1256 | if (png_ptr) | ||
1257 | png_ptr->user_chunk_cache_max = user_chunk_cache_max; | ||
1258 | } | ||
1259 | |||
1260 | /* This function was added to libpng 1.4.1 */ | ||
1261 | void PNGAPI | ||
1262 | png_set_chunk_malloc_max (png_structp png_ptr, | ||
1263 | png_alloc_size_t user_chunk_malloc_max) | ||
1264 | { | ||
1265 | if (png_ptr) | ||
1266 | png_ptr->user_chunk_malloc_max = user_chunk_malloc_max; | ||
1267 | } | ||
1268 | #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */ | ||
1269 | |||
1270 | |||
1271 | #ifdef PNG_BENIGN_ERRORS_SUPPORTED | ||
1272 | void PNGAPI | ||
1273 | png_set_benign_errors(png_structp png_ptr, int allowed) | ||
1274 | { | ||
1275 | png_debug(1, "in png_set_benign_errors"); | ||
1276 | |||
1277 | if (allowed) | ||
1278 | png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN; | ||
1279 | |||
1280 | else | ||
1281 | png_ptr->flags &= ~PNG_FLAG_BENIGN_ERRORS_WARN; | ||
1282 | } | ||
1283 | #endif /* PNG_BENIGN_ERRORS_SUPPORTED */ | ||
1284 | #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */ | ||