pngset.c
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1 
2 /* pngset.c - storage of image information into info struct
3  *
4  * Last changed in libpng 1.2.30 [August 15, 2008]
5  * For conditions of distribution and use, see copyright notice in png.h
6  * Copyright (c) 1998-2008 Glenn Randers-Pehrson
7  * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
8  * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
9  *
10  * The functions here are used during reads to store data from the file
11  * into the info struct, and during writes to store application data
12  * into the info struct for writing into the file. This abstracts the
13  * info struct and allows us to change the structure in the future.
14  */
15 
16 #define PNG_INTERNAL
17 #include "png.h"
18 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
19 
20 #if defined(PNG_bKGD_SUPPORTED)
21 void PNGAPI
23 {
24  png_debug1(1, "in %s storage function\n", "bKGD");
25  if (png_ptr == NULL || info_ptr == NULL)
26  return;
27 
28  png_memcpy(&(info_ptr->background), background, png_sizeof(png_color_16));
29  info_ptr->valid |= PNG_INFO_bKGD;
30 }
31 #endif
32 
33 #if defined(PNG_cHRM_SUPPORTED)
34 #ifdef PNG_FLOATING_POINT_SUPPORTED
35 void PNGAPI
37  double white_x, double white_y, double red_x, double red_y,
38  double green_x, double green_y, double blue_x, double blue_y)
39 {
40  png_debug1(1, "in %s storage function\n", "cHRM");
41  if (png_ptr == NULL || info_ptr == NULL)
42  return;
43  if (!(white_x || white_y || red_x || red_y || green_x || green_y ||
44  blue_x || blue_y))
45  {
46  png_warning(png_ptr,
47  "Ignoring attempt to set all-zero chromaticity values");
48  return;
49  }
50  if (white_x < 0.0 || white_y < 0.0 ||
51  red_x < 0.0 || red_y < 0.0 ||
52  green_x < 0.0 || green_y < 0.0 ||
53  blue_x < 0.0 || blue_y < 0.0)
54  {
55  png_warning(png_ptr,
56  "Ignoring attempt to set negative chromaticity value");
57  return;
58  }
59  if (white_x > 21474.83 || white_y > 21474.83 ||
60  red_x > 21474.83 || red_y > 21474.83 ||
61  green_x > 21474.83 || green_y > 21474.83 ||
62  blue_x > 21474.83 || blue_y > 21474.83)
63  {
64  png_warning(png_ptr,
65  "Ignoring attempt to set chromaticity value exceeding 21474.83");
66  return;
67  }
68 
69  info_ptr->x_white = (float)white_x;
70  info_ptr->y_white = (float)white_y;
71  info_ptr->x_red = (float)red_x;
72  info_ptr->y_red = (float)red_y;
73  info_ptr->x_green = (float)green_x;
74  info_ptr->y_green = (float)green_y;
75  info_ptr->x_blue = (float)blue_x;
76  info_ptr->y_blue = (float)blue_y;
77 #ifdef PNG_FIXED_POINT_SUPPORTED
78  info_ptr->int_x_white = (png_fixed_point)(white_x*100000.+0.5);
79  info_ptr->int_y_white = (png_fixed_point)(white_y*100000.+0.5);
80  info_ptr->int_x_red = (png_fixed_point)( red_x*100000.+0.5);
81  info_ptr->int_y_red = (png_fixed_point)( red_y*100000.+0.5);
82  info_ptr->int_x_green = (png_fixed_point)(green_x*100000.+0.5);
83  info_ptr->int_y_green = (png_fixed_point)(green_y*100000.+0.5);
84  info_ptr->int_x_blue = (png_fixed_point)( blue_x*100000.+0.5);
85  info_ptr->int_y_blue = (png_fixed_point)( blue_y*100000.+0.5);
86 #endif
87  info_ptr->valid |= PNG_INFO_cHRM;
88 }
89 #endif
90 #ifdef PNG_FIXED_POINT_SUPPORTED
91 void PNGAPI
96 {
97  png_debug1(1, "in %s storage function\n", "cHRM");
98  if (png_ptr == NULL || info_ptr == NULL)
99  return;
100 
101  if (!(white_x || white_y || red_x || red_y || green_x || green_y ||
102  blue_x || blue_y))
103  {
104  png_warning(png_ptr,
105  "Ignoring attempt to set all-zero chromaticity values");
106  return;
107  }
108  if (white_x < 0 || white_y < 0 ||
109  red_x < 0 || red_y < 0 ||
110  green_x < 0 || green_y < 0 ||
111  blue_x < 0 || blue_y < 0)
112  {
113  png_warning(png_ptr,
114  "Ignoring attempt to set negative chromaticity value");
115  return;
116  }
117  if (white_x > (png_fixed_point) PNG_UINT_31_MAX ||
118  white_y > (png_fixed_point) PNG_UINT_31_MAX ||
119  red_x > (png_fixed_point) PNG_UINT_31_MAX ||
120  red_y > (png_fixed_point) PNG_UINT_31_MAX ||
121  green_x > (png_fixed_point) PNG_UINT_31_MAX ||
122  green_y > (png_fixed_point) PNG_UINT_31_MAX ||
123  blue_x > (png_fixed_point) PNG_UINT_31_MAX ||
124  blue_y > (png_fixed_point) PNG_UINT_31_MAX )
125  {
126  png_warning(png_ptr,
127  "Ignoring attempt to set chromaticity value exceeding 21474.83");
128  return;
129  }
130  info_ptr->int_x_white = white_x;
131  info_ptr->int_y_white = white_y;
132  info_ptr->int_x_red = red_x;
133  info_ptr->int_y_red = red_y;
134  info_ptr->int_x_green = green_x;
135  info_ptr->int_y_green = green_y;
136  info_ptr->int_x_blue = blue_x;
137  info_ptr->int_y_blue = blue_y;
138 #ifdef PNG_FLOATING_POINT_SUPPORTED
139  info_ptr->x_white = (float)(white_x/100000.);
140  info_ptr->y_white = (float)(white_y/100000.);
141  info_ptr->x_red = (float)( red_x/100000.);
142  info_ptr->y_red = (float)( red_y/100000.);
143  info_ptr->x_green = (float)(green_x/100000.);
144  info_ptr->y_green = (float)(green_y/100000.);
145  info_ptr->x_blue = (float)( blue_x/100000.);
146  info_ptr->y_blue = (float)( blue_y/100000.);
147 #endif
148  info_ptr->valid |= PNG_INFO_cHRM;
149 }
150 #endif
151 #endif
152 
153 #if defined(PNG_gAMA_SUPPORTED)
154 #ifdef PNG_FLOATING_POINT_SUPPORTED
155 void PNGAPI
157 {
158  double gamma;
159  png_debug1(1, "in %s storage function\n", "gAMA");
160  if (png_ptr == NULL || info_ptr == NULL)
161  return;
162 
163  /* Check for overflow */
164  if (file_gamma > 21474.83)
165  {
166  png_warning(png_ptr, "Limiting gamma to 21474.83");
167  gamma=21474.83;
168  }
169  else
170  gamma = file_gamma;
171  info_ptr->gamma = (float)gamma;
172 #ifdef PNG_FIXED_POINT_SUPPORTED
173  info_ptr->int_gamma = (int)(gamma*100000.+.5);
174 #endif
175  info_ptr->valid |= PNG_INFO_gAMA;
176  if (gamma == 0.0)
177  png_warning(png_ptr, "Setting gamma=0");
178 }
179 #endif
180 void PNGAPI
182  int_gamma)
183 {
184  png_fixed_point gamma;
185 
186  png_debug1(1, "in %s storage function\n", "gAMA");
187  if (png_ptr == NULL || info_ptr == NULL)
188  return;
189 
190  if (int_gamma > (png_fixed_point) PNG_UINT_31_MAX)
191  {
192  png_warning(png_ptr, "Limiting gamma to 21474.83");
193  gamma=PNG_UINT_31_MAX;
194  }
195  else
196  {
197  if (int_gamma < 0)
198  {
199  png_warning(png_ptr, "Setting negative gamma to zero");
200  gamma = 0;
201  }
202  else
203  gamma = int_gamma;
204  }
205 #ifdef PNG_FLOATING_POINT_SUPPORTED
206  info_ptr->gamma = (float)(gamma/100000.);
207 #endif
208 #ifdef PNG_FIXED_POINT_SUPPORTED
209  info_ptr->int_gamma = gamma;
210 #endif
211  info_ptr->valid |= PNG_INFO_gAMA;
212  if (gamma == 0)
213  png_warning(png_ptr, "Setting gamma=0");
214 }
215 #endif
216 
217 #if defined(PNG_hIST_SUPPORTED)
218 void PNGAPI
220 {
221  int i;
222 
223  png_debug1(1, "in %s storage function\n", "hIST");
224  if (png_ptr == NULL || info_ptr == NULL)
225  return;
226  if (info_ptr->num_palette == 0 || info_ptr->num_palette
228  {
229  png_warning(png_ptr,
230  "Invalid palette size, hIST allocation skipped.");
231  return;
232  }
233 
234 #ifdef PNG_FREE_ME_SUPPORTED
235  png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
236 #endif
237  /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in version
238  1.2.1 */
239  png_ptr->hist = (png_uint_16p)png_malloc_warn(png_ptr,
241  if (png_ptr->hist == NULL)
242  {
243  png_warning(png_ptr, "Insufficient memory for hIST chunk data.");
244  return;
245  }
246 
247  for (i = 0; i < info_ptr->num_palette; i++)
248  png_ptr->hist[i] = hist[i];
249  info_ptr->hist = png_ptr->hist;
250  info_ptr->valid |= PNG_INFO_hIST;
251 
253  info_ptr->free_me |= PNG_FREE_HIST;
254 #else
255  png_ptr->flags |= PNG_FLAG_FREE_HIST;
256 #endif
257 }
258 #endif
259 
260 void PNGAPI
263  int color_type, int interlace_type, int compression_type,
264  int filter_type)
265 {
266  png_debug1(1, "in %s storage function\n", "IHDR");
267  if (png_ptr == NULL || info_ptr == NULL)
268  return;
269 
270  /* check for width and height valid values */
271  if (width == 0 || height == 0)
272  png_error(png_ptr, "Image width or height is zero in IHDR");
273 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
274  if (width > png_ptr->user_width_max || height > png_ptr->user_height_max)
275  png_error(png_ptr, "image size exceeds user limits in IHDR");
276 #else
277  if (width > PNG_USER_WIDTH_MAX || height > PNG_USER_HEIGHT_MAX)
278  png_error(png_ptr, "image size exceeds user limits in IHDR");
279 #endif
280  if (width > PNG_UINT_31_MAX || height > PNG_UINT_31_MAX)
281  png_error(png_ptr, "Invalid image size in IHDR");
282  if ( width > (PNG_UINT_32_MAX
283  >> 3) /* 8-byte RGBA pixels */
284  - 64 /* bigrowbuf hack */
285  - 1 /* filter byte */
286  - 7*8 /* rounding of width to multiple of 8 pixels */
287  - 8) /* extra max_pixel_depth pad */
288  png_warning(png_ptr, "Width is too large for libpng to process pixels");
289 
290  /* check other values */
291  if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
292  bit_depth != 8 && bit_depth != 16)
293  png_error(png_ptr, "Invalid bit depth in IHDR");
294 
295  if (color_type < 0 || color_type == 1 ||
296  color_type == 5 || color_type > 6)
297  png_error(png_ptr, "Invalid color type in IHDR");
298 
299  if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
300  ((color_type == PNG_COLOR_TYPE_RGB ||
301  color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
302  color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
303  png_error(png_ptr, "Invalid color type/bit depth combination in IHDR");
304 
305  if (interlace_type >= PNG_INTERLACE_LAST)
306  png_error(png_ptr, "Unknown interlace method in IHDR");
307 
308  if (compression_type != PNG_COMPRESSION_TYPE_BASE)
309  png_error(png_ptr, "Unknown compression method in IHDR");
310 
311 #if defined(PNG_MNG_FEATURES_SUPPORTED)
312  /* Accept filter_method 64 (intrapixel differencing) only if
313  * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
314  * 2. Libpng did not read a PNG signature (this filter_method is only
315  * used in PNG datastreams that are embedded in MNG datastreams) and
316  * 3. The application called png_permit_mng_features with a mask that
317  * included PNG_FLAG_MNG_FILTER_64 and
318  * 4. The filter_method is 64 and
319  * 5. The color_type is RGB or RGBA
320  */
321  if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)&&png_ptr->mng_features_permitted)
322  png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
323  if (filter_type != PNG_FILTER_TYPE_BASE)
324  {
325  if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
326  (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
327  ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
328  (color_type == PNG_COLOR_TYPE_RGB ||
329  color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
330  png_error(png_ptr, "Unknown filter method in IHDR");
331  if (png_ptr->mode&PNG_HAVE_PNG_SIGNATURE)
332  png_warning(png_ptr, "Invalid filter method in IHDR");
333  }
334 #else
335  if (filter_type != PNG_FILTER_TYPE_BASE)
336  png_error(png_ptr, "Unknown filter method in IHDR");
337 #endif
338 
339  info_ptr->width = width;
340  info_ptr->height = height;
341  info_ptr->bit_depth = (png_byte)bit_depth;
342  info_ptr->color_type =(png_byte) color_type;
343  info_ptr->compression_type = (png_byte)compression_type;
344  info_ptr->filter_type = (png_byte)filter_type;
345  info_ptr->interlace_type = (png_byte)interlace_type;
346  if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
347  info_ptr->channels = 1;
348  else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
349  info_ptr->channels = 3;
350  else
351  info_ptr->channels = 1;
352  if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
353  info_ptr->channels++;
354  info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
355 
356  /* check for potential overflow */
357  if (width > (PNG_UINT_32_MAX
358  >> 3) /* 8-byte RGBA pixels */
359  - 64 /* bigrowbuf hack */
360  - 1 /* filter byte */
361  - 7*8 /* rounding of width to multiple of 8 pixels */
362  - 8) /* extra max_pixel_depth pad */
363  info_ptr->rowbytes = (png_size_t)0;
364  else
365  info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
366 }
367 
368 #if defined(PNG_oFFs_SUPPORTED)
369 void PNGAPI
372 {
373  png_debug1(1, "in %s storage function\n", "oFFs");
374  if (png_ptr == NULL || info_ptr == NULL)
375  return;
376 
377  info_ptr->x_offset = offset_x;
378  info_ptr->y_offset = offset_y;
379  info_ptr->offset_unit_type = (png_byte)unit_type;
380  info_ptr->valid |= PNG_INFO_oFFs;
381 }
382 #endif
383 
384 #if defined(PNG_pCAL_SUPPORTED)
385 void PNGAPI
389 {
391  int i;
392 
393  png_debug1(1, "in %s storage function\n", "pCAL");
394  if (png_ptr == NULL || info_ptr == NULL)
395  return;
396 
397  length = png_strlen(purpose) + 1;
398  png_debug1(3, "allocating purpose for info (%lu bytes)\n",
399  (unsigned long)length);
400  info_ptr->pcal_purpose = (png_charp)png_malloc_warn(png_ptr, length);
401  if (info_ptr->pcal_purpose == NULL)
402  {
403  png_warning(png_ptr, "Insufficient memory for pCAL purpose.");
404  return;
405  }
406  png_memcpy(info_ptr->pcal_purpose, purpose, (png_size_t)length);
407 
408  png_debug(3, "storing X0, X1, type, and nparams in info\n");
409  info_ptr->pcal_X0 = X0;
410  info_ptr->pcal_X1 = X1;
411  info_ptr->pcal_type = (png_byte)type;
412  info_ptr->pcal_nparams = (png_byte)nparams;
413 
414  length = png_strlen(units) + 1;
415  png_debug1(3, "allocating units for info (%lu bytes)\n",
416  (unsigned long)length);
417  info_ptr->pcal_units = (png_charp)png_malloc_warn(png_ptr, length);
418  if (info_ptr->pcal_units == NULL)
419  {
420  png_warning(png_ptr, "Insufficient memory for pCAL units.");
421  return;
422  }
423  png_memcpy(info_ptr->pcal_units, units, (png_size_t)length);
424 
425  info_ptr->pcal_params = (png_charpp)png_malloc_warn(png_ptr,
426  (png_uint_32)((nparams + 1) * png_sizeof(png_charp)));
427  if (info_ptr->pcal_params == NULL)
428  {
429  png_warning(png_ptr, "Insufficient memory for pCAL params.");
430  return;
431  }
432 
433  info_ptr->pcal_params[nparams] = NULL;
434 
435  for (i = 0; i < nparams; i++)
436  {
437  length = png_strlen(params[i]) + 1;
438  png_debug2(3, "allocating parameter %d for info (%lu bytes)\n", i,
439  (unsigned long)length);
440  info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
441  if (info_ptr->pcal_params[i] == NULL)
442  {
443  png_warning(png_ptr, "Insufficient memory for pCAL parameter.");
444  return;
445  }
446  png_memcpy(info_ptr->pcal_params[i], params[i], (png_size_t)length);
447  }
448 
449  info_ptr->valid |= PNG_INFO_pCAL;
450 #ifdef PNG_FREE_ME_SUPPORTED
451  info_ptr->free_me |= PNG_FREE_PCAL;
452 #endif
453 }
454 #endif
455 
456 #if defined(PNG_READ_sCAL_SUPPORTED) || defined(PNG_WRITE_sCAL_SUPPORTED)
457 #ifdef PNG_FLOATING_POINT_SUPPORTED
458 void PNGAPI
460  int unit, double width, double height)
461 {
462  png_debug1(1, "in %s storage function\n", "sCAL");
463  if (png_ptr == NULL || info_ptr == NULL)
464  return;
465 
466  info_ptr->scal_unit = (png_byte)unit;
467  info_ptr->scal_pixel_width = width;
468  info_ptr->scal_pixel_height = height;
469 
470  info_ptr->valid |= PNG_INFO_sCAL;
471 }
472 #else
473 #ifdef PNG_FIXED_POINT_SUPPORTED
474 void PNGAPI
475 png_set_sCAL_s(png_structp png_ptr, png_infop info_ptr,
476  int unit, png_charp swidth, png_charp sheight)
477 {
479 
480  png_debug1(1, "in %s storage function\n", "sCAL");
481  if (png_ptr == NULL || info_ptr == NULL)
482  return;
483 
484  info_ptr->scal_unit = (png_byte)unit;
485 
486  length = png_strlen(swidth) + 1;
487  png_debug1(3, "allocating unit for info (%u bytes)\n",
488  (unsigned int)length);
489  info_ptr->scal_s_width = (png_charp)png_malloc_warn(png_ptr, length);
490  if (info_ptr->scal_s_width == NULL)
491  {
492  png_warning(png_ptr,
493  "Memory allocation failed while processing sCAL.");
494  return;
495  }
496  png_memcpy(info_ptr->scal_s_width, swidth, (png_size_t)length);
497 
498  length = png_strlen(sheight) + 1;
499  png_debug1(3, "allocating unit for info (%u bytes)\n",
500  (unsigned int)length);
501  info_ptr->scal_s_height = (png_charp)png_malloc_warn(png_ptr, length);
502  if (info_ptr->scal_s_height == NULL)
503  {
504  png_free (png_ptr, info_ptr->scal_s_width);
505  info_ptr->scal_s_width = NULL;
506  png_warning(png_ptr,
507  "Memory allocation failed while processing sCAL.");
508  return;
509  }
510  png_memcpy(info_ptr->scal_s_height, sheight, (png_size_t)length);
511  info_ptr->valid |= PNG_INFO_sCAL;
512 #ifdef PNG_FREE_ME_SUPPORTED
513  info_ptr->free_me |= PNG_FREE_SCAL;
514 #endif
515 }
516 #endif
517 #endif
518 #endif
519 
520 #if defined(PNG_pHYs_SUPPORTED)
521 void PNGAPI
524 {
525  png_debug1(1, "in %s storage function\n", "pHYs");
526  if (png_ptr == NULL || info_ptr == NULL)
527  return;
528 
529  info_ptr->x_pixels_per_unit = res_x;
530  info_ptr->y_pixels_per_unit = res_y;
531  info_ptr->phys_unit_type = (png_byte)unit_type;
532  info_ptr->valid |= PNG_INFO_pHYs;
533 }
534 #endif
535 
536 void PNGAPI
539 {
540 
541  png_debug1(1, "in %s storage function\n", "PLTE");
542  if (png_ptr == NULL || info_ptr == NULL)
543  return;
544 
545  if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH)
546  {
547  if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
548  png_error(png_ptr, "Invalid palette length");
549  else
550  {
551  png_warning(png_ptr, "Invalid palette length");
552  return;
553  }
554  }
555 
556  /*
557  * It may not actually be necessary to set png_ptr->palette here;
558  * we do it for backward compatibility with the way the png_handle_tRNS
559  * function used to do the allocation.
560  */
561 #ifdef PNG_FREE_ME_SUPPORTED
562  png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
563 #endif
564 
565  /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
566  of num_palette entries,
567  in case of an invalid PNG file that has too-large sample values. */
568  png_ptr->palette = (png_colorp)png_malloc(png_ptr,
569  PNG_MAX_PALETTE_LENGTH * png_sizeof(png_color));
570  png_memset(png_ptr->palette, 0, PNG_MAX_PALETTE_LENGTH *
572  png_memcpy(png_ptr->palette, palette, num_palette * png_sizeof(png_color));
573  info_ptr->palette = png_ptr->palette;
574  info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
575 
576 #ifdef PNG_FREE_ME_SUPPORTED
577  info_ptr->free_me |= PNG_FREE_PLTE;
578 #else
579  png_ptr->flags |= PNG_FLAG_FREE_PLTE;
580 #endif
581 
582  info_ptr->valid |= PNG_INFO_PLTE;
583 }
584 
585 #if defined(PNG_sBIT_SUPPORTED)
586 void PNGAPI
589 {
590  png_debug1(1, "in %s storage function\n", "sBIT");
591  if (png_ptr == NULL || info_ptr == NULL)
592  return;
593 
594  png_memcpy(&(info_ptr->sig_bit), sig_bit, png_sizeof(png_color_8));
595  info_ptr->valid |= PNG_INFO_sBIT;
596 }
597 #endif
598 
599 #if defined(PNG_sRGB_SUPPORTED)
600 void PNGAPI
602 {
603  png_debug1(1, "in %s storage function\n", "sRGB");
604  if (png_ptr == NULL || info_ptr == NULL)
605  return;
606 
607  info_ptr->srgb_intent = (png_byte)intent;
608  info_ptr->valid |= PNG_INFO_sRGB;
609 }
610 
611 void PNGAPI
613  int intent)
614 {
615 #if defined(PNG_gAMA_SUPPORTED)
616 #ifdef PNG_FLOATING_POINT_SUPPORTED
617  float file_gamma;
618 #endif
619 #ifdef PNG_FIXED_POINT_SUPPORTED
621 #endif
622 #endif
623 #if defined(PNG_cHRM_SUPPORTED)
624 #ifdef PNG_FLOATING_POINT_SUPPORTED
626 #endif
627 #ifdef PNG_FIXED_POINT_SUPPORTED
630 #endif
631 #endif
632  png_debug1(1, "in %s storage function\n", "sRGB_gAMA_and_cHRM");
633  if (png_ptr == NULL || info_ptr == NULL)
634  return;
635 
636  png_set_sRGB(png_ptr, info_ptr, intent);
637 
638 #if defined(PNG_gAMA_SUPPORTED)
639 #ifdef PNG_FLOATING_POINT_SUPPORTED
640  file_gamma = (float).45455;
641  png_set_gAMA(png_ptr, info_ptr, file_gamma);
642 #endif
643 #ifdef PNG_FIXED_POINT_SUPPORTED
644  int_file_gamma = 45455L;
645  png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
646 #endif
647 #endif
648 
649 #if defined(PNG_cHRM_SUPPORTED)
650 #ifdef PNG_FIXED_POINT_SUPPORTED
651  int_white_x = 31270L;
652  int_white_y = 32900L;
653  int_red_x = 64000L;
654  int_red_y = 33000L;
655  int_green_x = 30000L;
656  int_green_y = 60000L;
657  int_blue_x = 15000L;
658  int_blue_y = 6000L;
659 
660  png_set_cHRM_fixed(png_ptr, info_ptr,
661  int_white_x, int_white_y, int_red_x, int_red_y, int_green_x, int_green_y,
662  int_blue_x, int_blue_y);
663 #endif
664 #ifdef PNG_FLOATING_POINT_SUPPORTED
665  white_x = (float).3127;
666  white_y = (float).3290;
667  red_x = (float).64;
668  red_y = (float).33;
669  green_x = (float).30;
670  green_y = (float).60;
671  blue_x = (float).15;
672  blue_y = (float).06;
673 
674  png_set_cHRM(png_ptr, info_ptr,
675  white_x, white_y, red_x, red_y, green_x, green_y, blue_x, blue_y);
676 #endif
677 #endif
678 }
679 #endif
680 
681 
682 #if defined(PNG_iCCP_SUPPORTED)
683 void PNGAPI
687 {
688  png_charp new_iccp_name;
689  png_charp new_iccp_profile;
691 
692  png_debug1(1, "in %s storage function\n", "iCCP");
693  if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
694  return;
695 
696  length = png_strlen(name)+1;
697  new_iccp_name = (png_charp)png_malloc_warn(png_ptr, length);
698  if (new_iccp_name == NULL)
699  {
700  png_warning(png_ptr, "Insufficient memory to process iCCP chunk.");
701  return;
702  }
703  png_memcpy(new_iccp_name, name, length);
704  new_iccp_profile = (png_charp)png_malloc_warn(png_ptr, proflen);
705  if (new_iccp_profile == NULL)
706  {
707  png_free (png_ptr, new_iccp_name);
708  png_warning(png_ptr,
709  "Insufficient memory to process iCCP profile.");
710  return;
711  }
712  png_memcpy(new_iccp_profile, profile, (png_size_t)proflen);
713 
714  png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
715 
716  info_ptr->iccp_proflen = proflen;
717  info_ptr->iccp_name = new_iccp_name;
718  info_ptr->iccp_profile = new_iccp_profile;
719  /* Compression is always zero but is here so the API and info structure
720  * does not have to change if we introduce multiple compression types */
721  info_ptr->iccp_compression = (png_byte)compression_type;
722 #ifdef PNG_FREE_ME_SUPPORTED
723  info_ptr->free_me |= PNG_FREE_ICCP;
724 #endif
725  info_ptr->valid |= PNG_INFO_iCCP;
726 }
727 #endif
728 
729 #if defined(PNG_TEXT_SUPPORTED)
730 void PNGAPI
732  int num_text)
733 {
734  int ret;
735  ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
736  if (ret)
737  png_error(png_ptr, "Insufficient memory to store text");
738 }
739 
740 int /* PRIVATE */
742  int num_text)
743 {
744  int i;
745 
746  png_debug1(1, "in %s storage function\n", (png_ptr->chunk_name[0] == '\0' ?
747  "text" : (png_const_charp)png_ptr->chunk_name));
748 
749  if (png_ptr == NULL || info_ptr == NULL || num_text == 0)
750  return(0);
751 
752  /* Make sure we have enough space in the "text" array in info_struct
753  * to hold all of the incoming text_ptr objects.
754  */
755  if (info_ptr->num_text + num_text > info_ptr->max_text)
756  {
757  if (info_ptr->text != NULL)
758  {
759  png_textp old_text;
760  int old_max;
761 
762  old_max = info_ptr->max_text;
763  info_ptr->max_text = info_ptr->num_text + num_text + 8;
764  old_text = info_ptr->text;
765  info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
766  (png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
767  if (info_ptr->text == NULL)
768  {
769  png_free(png_ptr, old_text);
770  return(1);
771  }
772  png_memcpy(info_ptr->text, old_text, (png_size_t)(old_max *
773  png_sizeof(png_text)));
774  png_free(png_ptr, old_text);
775  }
776  else
777  {
778  info_ptr->max_text = num_text + 8;
779  info_ptr->num_text = 0;
780  info_ptr->text = (png_textp)png_malloc_warn(png_ptr,
781  (png_uint_32)(info_ptr->max_text * png_sizeof(png_text)));
782  if (info_ptr->text == NULL)
783  return(1);
784 #ifdef PNG_FREE_ME_SUPPORTED
785  info_ptr->free_me |= PNG_FREE_TEXT;
786 #endif
787  }
788  png_debug1(3, "allocated %d entries for info_ptr->text\n",
789  info_ptr->max_text);
790  }
791  for (i = 0; i < num_text; i++)
792  {
793  png_size_t text_length, key_len;
794  png_size_t lang_len, lang_key_len;
795  png_textp textp = &(info_ptr->text[info_ptr->num_text]);
796 
797  if (text_ptr[i].key == NULL)
798  continue;
799 
800  key_len = png_strlen(text_ptr[i].key);
801 
802  if (text_ptr[i].compression <= 0)
803  {
804  lang_len = 0;
805  lang_key_len = 0;
806  }
807  else
808 #ifdef PNG_iTXt_SUPPORTED
809  {
810  /* set iTXt data */
811  if (text_ptr[i].lang != NULL)
812  lang_len = png_strlen(text_ptr[i].lang);
813  else
814  lang_len = 0;
815  if (text_ptr[i].lang_key != NULL)
816  lang_key_len = png_strlen(text_ptr[i].lang_key);
817  else
818  lang_key_len = 0;
819  }
820 #else
821  {
822  png_warning(png_ptr, "iTXt chunk not supported.");
823  continue;
824  }
825 #endif
826 
827  if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
828  {
829  text_length = 0;
830 #ifdef PNG_iTXt_SUPPORTED
831  if (text_ptr[i].compression > 0)
832  textp->compression = PNG_ITXT_COMPRESSION_NONE;
833  else
834 #endif
835  textp->compression = PNG_TEXT_COMPRESSION_NONE;
836  }
837  else
838  {
839  text_length = png_strlen(text_ptr[i].text);
840  textp->compression = text_ptr[i].compression;
841  }
842 
843  textp->key = (png_charp)png_malloc_warn(png_ptr,
844  (png_uint_32)
845  (key_len + text_length + lang_len + lang_key_len + 4));
846  if (textp->key == NULL)
847  return(1);
848  png_debug2(2, "Allocated %lu bytes at %x in png_set_text\n",
849  (png_uint_32)
850  (key_len + lang_len + lang_key_len + text_length + 4),
851  (int)textp->key);
852 
853  png_memcpy(textp->key, text_ptr[i].key,
854  (png_size_t)(key_len));
855  *(textp->key + key_len) = '\0';
856 #ifdef PNG_iTXt_SUPPORTED
857  if (text_ptr[i].compression > 0)
858  {
859  textp->lang = textp->key + key_len + 1;
860  png_memcpy(textp->lang, text_ptr[i].lang, lang_len);
861  *(textp->lang + lang_len) = '\0';
862  textp->lang_key = textp->lang + lang_len + 1;
863  png_memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len);
864  *(textp->lang_key + lang_key_len) = '\0';
865  textp->text = textp->lang_key + lang_key_len + 1;
866  }
867  else
868 #endif
869  {
870 #ifdef PNG_iTXt_SUPPORTED
871  textp->lang=NULL;
872  textp->lang_key=NULL;
873 #endif
874  textp->text = textp->key + key_len + 1;
875  }
876  if (text_length)
877  png_memcpy(textp->text, text_ptr[i].text,
878  (png_size_t)(text_length));
879  *(textp->text + text_length) = '\0';
880 
881 #ifdef PNG_iTXt_SUPPORTED
882  if (textp->compression > 0)
883  {
884  textp->text_length = 0;
885  textp->itxt_length = text_length;
886  }
887  else
888 #endif
889  {
890  textp->text_length = text_length;
891 #ifdef PNG_iTXt_SUPPORTED
892  textp->itxt_length = 0;
893 #endif
894  }
895  info_ptr->num_text++;
896  png_debug1(3, "transferred text chunk %d\n", info_ptr->num_text);
897  }
898  return(0);
899 }
900 #endif
901 
902 #if defined(PNG_tIME_SUPPORTED)
903 void PNGAPI
905 {
906  png_debug1(1, "in %s storage function\n", "tIME");
907  if (png_ptr == NULL || info_ptr == NULL ||
908  (png_ptr->mode & PNG_WROTE_tIME))
909  return;
910 
911  png_memcpy(&(info_ptr->mod_time), mod_time, png_sizeof(png_time));
912  info_ptr->valid |= PNG_INFO_tIME;
913 }
914 #endif
915 
916 #if defined(PNG_tRNS_SUPPORTED)
917 void PNGAPI
920 {
921  png_debug1(1, "in %s storage function\n", "tRNS");
922  if (png_ptr == NULL || info_ptr == NULL)
923  return;
924 
925  if (trans != NULL)
926  {
927  /*
928  * It may not actually be necessary to set png_ptr->trans here;
929  * we do it for backward compatibility with the way the png_handle_tRNS
930  * function used to do the allocation.
931  */
932 
933 #ifdef PNG_FREE_ME_SUPPORTED
934  png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
935 #endif
936 
937  /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
938  png_ptr->trans = info_ptr->trans = (png_bytep)png_malloc(png_ptr,
940  if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
941  png_memcpy(info_ptr->trans, trans, (png_size_t)num_trans);
942  }
943 
944  if (trans_values != NULL)
945  {
946  int sample_max = (1 << info_ptr->bit_depth);
947  if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
948  (int)trans_values->gray > sample_max) ||
949  (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
950  ((int)trans_values->red > sample_max ||
951  (int)trans_values->green > sample_max ||
952  (int)trans_values->blue > sample_max)))
953  png_warning(png_ptr,
954  "tRNS chunk has out-of-range samples for bit_depth");
955  png_memcpy(&(info_ptr->trans_values), trans_values,
957  if (num_trans == 0)
958  num_trans = 1;
959  }
960 
961  info_ptr->num_trans = (png_uint_16)num_trans;
962  if (num_trans != 0)
963  {
964  info_ptr->valid |= PNG_INFO_tRNS;
965 #ifdef PNG_FREE_ME_SUPPORTED
966  info_ptr->free_me |= PNG_FREE_TRNS;
967 #else
968  png_ptr->flags |= PNG_FLAG_FREE_TRNS;
969 #endif
970  }
971 }
972 #endif
973 
974 #if defined(PNG_sPLT_SUPPORTED)
975 void PNGAPI
978 /*
979  * entries - array of png_sPLT_t structures
980  * to be added to the list of palettes
981  * in the info structure.
982  * nentries - number of palette structures to be
983  * added.
984  */
985 {
986  png_sPLT_tp np;
987  int i;
988 
989  if (png_ptr == NULL || info_ptr == NULL)
990  return;
991 
992  np = (png_sPLT_tp)png_malloc_warn(png_ptr,
993  (info_ptr->splt_palettes_num + nentries) *
995  if (np == NULL)
996  {
997  png_warning(png_ptr, "No memory for sPLT palettes.");
998  return;
999  }
1000 
1001  png_memcpy(np, info_ptr->splt_palettes,
1002  info_ptr->splt_palettes_num * png_sizeof(png_sPLT_t));
1003  png_free(png_ptr, info_ptr->splt_palettes);
1004  info_ptr->splt_palettes=NULL;
1005 
1006  for (i = 0; i < nentries; i++)
1007  {
1008  png_sPLT_tp to = np + info_ptr->splt_palettes_num + i;
1009  png_sPLT_tp from = entries + i;
1011 
1012  length = png_strlen(from->name) + 1;
1013  to->name = (png_charp)png_malloc_warn(png_ptr, length);
1014  if (to->name == NULL)
1015  {
1016  png_warning(png_ptr,
1017  "Out of memory while processing sPLT chunk");
1018  continue;
1019  }
1020  png_memcpy(to->name, from->name, length);
1021  to->entries = (png_sPLT_entryp)png_malloc_warn(png_ptr,
1022  (png_uint_32)(from->nentries * png_sizeof(png_sPLT_entry)));
1023  if (to->entries == NULL)
1024  {
1025  png_warning(png_ptr,
1026  "Out of memory while processing sPLT chunk");
1027  png_free(png_ptr, to->name);
1028  to->name = NULL;
1029  continue;
1030  }
1031  png_memcpy(to->entries, from->entries,
1032  from->nentries * png_sizeof(png_sPLT_entry));
1033  to->nentries = from->nentries;
1034  to->depth = from->depth;
1035  }
1036 
1037  info_ptr->splt_palettes = np;
1038  info_ptr->splt_palettes_num += nentries;
1039  info_ptr->valid |= PNG_INFO_sPLT;
1040 #ifdef PNG_FREE_ME_SUPPORTED
1041  info_ptr->free_me |= PNG_FREE_SPLT;
1042 #endif
1043 }
1044 #endif /* PNG_sPLT_SUPPORTED */
1045 
1046 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
1047 void PNGAPI
1050 {
1051  png_unknown_chunkp np;
1052  int i;
1053 
1054  if (png_ptr == NULL || info_ptr == NULL || num_unknowns == 0)
1055  return;
1056 
1057  np = (png_unknown_chunkp)png_malloc_warn(png_ptr,
1058  (png_uint_32)((info_ptr->unknown_chunks_num + num_unknowns) *
1060  if (np == NULL)
1061  {
1062  png_warning(png_ptr,
1063  "Out of memory while processing unknown chunk.");
1064  return;
1065  }
1066 
1067  png_memcpy(np, info_ptr->unknown_chunks,
1068  info_ptr->unknown_chunks_num * png_sizeof(png_unknown_chunk));
1069  png_free(png_ptr, info_ptr->unknown_chunks);
1070  info_ptr->unknown_chunks=NULL;
1071 
1072  for (i = 0; i < num_unknowns; i++)
1073  {
1074  png_unknown_chunkp to = np + info_ptr->unknown_chunks_num + i;
1075  png_unknown_chunkp from = unknowns + i;
1076 
1077  png_memcpy((png_charp)to->name,
1078  (png_charp)from->name,
1079  png_sizeof(from->name));
1080  to->name[png_sizeof(to->name)-1] = '\0';
1081  to->size = from->size;
1082  /* note our location in the read or write sequence */
1083  to->location = (png_byte)(png_ptr->mode & 0xff);
1084 
1085  if (from->size == 0)
1086  to->data=NULL;
1087  else
1088  {
1089  to->data = (png_bytep)png_malloc_warn(png_ptr,
1090  (png_uint_32)from->size);
1091  if (to->data == NULL)
1092  {
1093  png_warning(png_ptr,
1094  "Out of memory while processing unknown chunk.");
1095  to->size = 0;
1096  }
1097  else
1098  png_memcpy(to->data, from->data, from->size);
1099  }
1100  }
1101 
1102  info_ptr->unknown_chunks = np;
1103  info_ptr->unknown_chunks_num += num_unknowns;
1104 #ifdef PNG_FREE_ME_SUPPORTED
1105  info_ptr->free_me |= PNG_FREE_UNKN;
1106 #endif
1107 }
1108 void PNGAPI
1110  int chunk, int location)
1111 {
1112  if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 && chunk <
1113  (int)info_ptr->unknown_chunks_num)
1114  info_ptr->unknown_chunks[chunk].location = (png_byte)location;
1115 }
1116 #endif
1117 
1118 #if defined(PNG_1_0_X) || defined(PNG_1_2_X)
1119 #if defined(PNG_READ_EMPTY_PLTE_SUPPORTED) || \
1120  defined(PNG_WRITE_EMPTY_PLTE_SUPPORTED)
1121 void PNGAPI
1123 {
1124  /* This function is deprecated in favor of png_permit_mng_features()
1125  and will be removed from libpng-1.3.0 */
1126  png_debug(1, "in png_permit_empty_plte, DEPRECATED.\n");
1127  if (png_ptr == NULL)
1128  return;
1129  png_ptr->mng_features_permitted = (png_byte)
1130  ((png_ptr->mng_features_permitted & (~PNG_FLAG_MNG_EMPTY_PLTE)) |
1131  ((empty_plte_permitted & PNG_FLAG_MNG_EMPTY_PLTE)));
1132 }
1133 #endif
1134 #endif
1135 
1136 #if defined(PNG_MNG_FEATURES_SUPPORTED)
1139 {
1140  png_debug(1, "in png_permit_mng_features\n");
1141  if (png_ptr == NULL)
1142  return (png_uint_32)0;
1143  png_ptr->mng_features_permitted =
1144  (png_byte)(mng_features & PNG_ALL_MNG_FEATURES);
1145  return (png_uint_32)png_ptr->mng_features_permitted;
1146 }
1147 #endif
1148 
1149 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
1150 void PNGAPI
1152  chunk_list, int num_chunks)
1153 {
1154  png_bytep new_list, p;
1155  int i, old_num_chunks;
1156  if (png_ptr == NULL)
1157  return;
1158  if (num_chunks == 0)
1159  {
1160  if (keep == PNG_HANDLE_CHUNK_ALWAYS || keep == PNG_HANDLE_CHUNK_IF_SAFE)
1161  png_ptr->flags |= PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
1162  else
1163  png_ptr->flags &= ~PNG_FLAG_KEEP_UNKNOWN_CHUNKS;
1164 
1165  if (keep == PNG_HANDLE_CHUNK_ALWAYS)
1166  png_ptr->flags |= PNG_FLAG_KEEP_UNSAFE_CHUNKS;
1167  else
1168  png_ptr->flags &= ~PNG_FLAG_KEEP_UNSAFE_CHUNKS;
1169  return;
1170  }
1171  if (chunk_list == NULL)
1172  return;
1173  old_num_chunks = png_ptr->num_chunk_list;
1174  new_list=(png_bytep)png_malloc(png_ptr,
1175  (png_uint_32)
1176  (5*(num_chunks + old_num_chunks)));
1177  if (png_ptr->chunk_list != NULL)
1178  {
1179  png_memcpy(new_list, png_ptr->chunk_list,
1180  (png_size_t)(5*old_num_chunks));
1181  png_free(png_ptr, png_ptr->chunk_list);
1182  png_ptr->chunk_list=NULL;
1183  }
1184  png_memcpy(new_list + 5*old_num_chunks, chunk_list,
1185  (png_size_t)(5*num_chunks));
1186  for (p = new_list + 5*old_num_chunks + 4, i = 0; i<num_chunks; i++, p += 5)
1187  *p=(png_byte)keep;
1188  png_ptr->num_chunk_list = old_num_chunks + num_chunks;
1189  png_ptr->chunk_list = new_list;
1190 #ifdef PNG_FREE_ME_SUPPORTED
1191  png_ptr->free_me |= PNG_FREE_LIST;
1192 #endif
1193 }
1194 #endif
1195 
1196 #if defined(PNG_READ_USER_CHUNKS_SUPPORTED)
1197 void PNGAPI
1199  png_user_chunk_ptr read_user_chunk_fn)
1200 {
1201  png_debug(1, "in png_set_read_user_chunk_fn\n");
1202  if (png_ptr == NULL)
1203  return;
1204  png_ptr->read_user_chunk_fn = read_user_chunk_fn;
1205  png_ptr->user_chunk_ptr = user_chunk_ptr;
1206 }
1207 #endif
1208 
1209 #if defined(PNG_INFO_IMAGE_SUPPORTED)
1210 void PNGAPI
1212 {
1213  png_debug1(1, "in %s storage function\n", "rows");
1214 
1215  if (png_ptr == NULL || info_ptr == NULL)
1216  return;
1217 
1218  if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
1219  png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
1220  info_ptr->row_pointers = row_pointers;
1221  if (row_pointers)
1222  info_ptr->valid |= PNG_INFO_IDAT;
1223 }
1224 #endif
1225 
1226 #ifdef PNG_WRITE_SUPPORTED
1227 void PNGAPI
1229  png_uint_32 size)
1230 {
1231  if (png_ptr == NULL)
1232  return;
1233  png_free(png_ptr, png_ptr->zbuf);
1234  png_ptr->zbuf_size = (png_size_t)size;
1235  png_ptr->zbuf = (png_bytep)png_malloc(png_ptr, size);
1236  png_ptr->zstream.next_out = png_ptr->zbuf;
1237  png_ptr->zstream.avail_out = (uInt)png_ptr->zbuf_size;
1238 }
1239 #endif
1240 
1241 void PNGAPI
1243 {
1244  if (png_ptr && info_ptr)
1245  info_ptr->valid &= ~mask;
1246 }
1247 
1248 
1249 #ifndef PNG_1_0_X
1250 #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
1251 /* function was added to libpng 1.2.0 and should always exist by default */
1252 void PNGAPI
1254 {
1255 /* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
1256  if (png_ptr != NULL)
1257  png_ptr->asm_flags = 0;
1258  asm_flags = asm_flags; /* Quiet the compiler */
1259 }
1260 
1261 /* this function was added to libpng 1.2.0 */
1262 void PNGAPI
1266 {
1267 /* Obsolete as of libpng-1.2.20 and will be removed from libpng-1.4.0 */
1268  if (png_ptr == NULL)
1269  return;
1270  /* Quiet the compiler */
1271  mmx_bitdepth_threshold = mmx_bitdepth_threshold;
1272  mmx_rowbytes_threshold = mmx_rowbytes_threshold;
1273 }
1274 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
1275 
1276 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
1277 /* this function was added to libpng 1.2.6 */
1278 void PNGAPI
1281 {
1282  /* Images with dimensions larger than these limits will be
1283  * rejected by png_set_IHDR(). To accept any PNG datastream
1284  * regardless of dimensions, set both limits to 0x7ffffffL.
1285  */
1286  if (png_ptr == NULL) return;
1287  png_ptr->user_width_max = user_width_max;
1288  png_ptr->user_height_max = user_height_max;
1289 }
1290 #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
1291 
1292 #endif /* ?PNG_1_0_X */
1293 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
void PNGAPI png_set_iCCP(png_structp png_ptr, png_infop info_ptr, png_charp name, int compression_type, png_charp profile, png_uint_32 proflen)
Definition: pngset.c:684
png_infop png_charpp int png_charpp profile
Definition: png.h:2382
png_infop png_charpp int png_charpp png_uint_32 * proflen
Definition: png.h:2382
#define PNG_INTERLACE_LAST
Definition: png.h:1024
#define PNG_FREE_TEXT
Definition: png.h:2098
#define PNG_USER_WIDTH_MAX
Definition: pngconf.h:795
void PNGAPI png_set_IHDR(png_structp png_ptr, png_infop info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth, int color_type, int interlace_type, int compression_type, int filter_type)
Definition: pngset.c:261
png_infop png_uint_32 * res_x
Definition: png.h:2344
png_infop png_charp png_int_32 png_int_32 int int png_charp * units
Definition: png.h:2332
png_unknown_chunk FAR * png_unknown_chunkp
Definition: png.h:703
void PNGAPI png_set_bKGD(png_structp png_ptr, png_infop info_ptr, png_color_16p background)
Definition: pngset.c:22
#define PNG_ALL_MNG_FEATURES
Definition: png.h:1157
void PNGAPI png_free_data(png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, int num)
Definition: png.c:339
void PNGAPI png_set_cHRM_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x, png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y, png_fixed_point blue_x, png_fixed_point blue_y)
Definition: pngset.c:92
#define PNG_INFO_gAMA
Definition: png.h:1067
#define PNG_FREE_HIST
Definition: png.h:2088
void PNGAPI png_set_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p hist)
Definition: pngset.c:219
#define PNG_INFO_tIME
Definition: png.h:1076
#define PNG_INFO_sRGB
Definition: png.h:1078
png_infop png_charp png_int_32 png_int_32 int * type
Definition: png.h:2332
void PNGAPI png_set_asm_flags(png_structp png_ptr, png_uint_32 asm_flags)
Definition: pngset.c:1253
png_infop png_uint_32 png_uint_32 * res_y
Definition: png.h:2344
png_voidp user_chunk_ptr
Definition: png.h:2022
#define png_strlen
Definition: pngconf.h:1463
png_infop double double double double double double double double * blue_y
Definition: png.h:2252
void PNGAPI png_set_mmx_thresholds(png_structp png_ptr, png_byte mmx_bitdepth_threshold, png_uint_32 mmx_rowbytes_threshold)
Definition: pngset.c:1263
png_infop png_textp * text_ptr
Definition: png.h:2407
png_colorp int num_palette
Definition: png.h:1720
png_infop double double double double double double double * blue_x
Definition: png.h:2252
#define PNG_INFO_hIST
Definition: png.h:1073
#define PNG_UINT_31_MAX
Definition: png.h:988
#define PNG_MAX_PALETTE_LENGTH
Definition: png.h:1060
void PNGAPI png_set_rows(png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers)
Definition: pngset.c:1211
png_color_16 FAR * png_color_16p
Definition: png.h:582
png_infop int * unit
Definition: png.h:2451
#define PNG_COLOR_TYPE_RGB
Definition: png.h:1005
png_infop png_fixed_point png_fixed_point png_fixed_point * int_red_x
Definition: png.h:2258
#define PNG_COLOR_TYPE_GRAY_ALPHA
Definition: png.h:1007
void PNGAPI png_set_unknown_chunks(png_structp png_ptr, png_infop info_ptr, png_unknown_chunkp unknowns, int num_unknowns)
Definition: pngset.c:1048
png_infop png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point * int_blue_y
Definition: png.h:2258
png_byte FAR * png_bytep
Definition: pngconf.h:1197
png_infop png_color_16p * background
Definition: png.h:2241
#define png_memset
Definition: pngconf.h:1466
char FAR * png_charp
Definition: pngconf.h:1203
#define PNG_COLOR_TYPE_PALETTE
Definition: png.h:1004
png_uint_32 size
Definition: png.h:1521
void PNGAPI png_set_sRGB_gAMA_and_cHRM(png_structp png_ptr, png_infop info_ptr, int intent)
Definition: pngset.c:612
png_infop png_charp png_int_32 png_int_32 * X1
Definition: png.h:2332
png_infop png_charpp name
Definition: png.h:2382
void PNGAPI png_set_user_limits(png_structp png_ptr, png_uint_32 user_width_max, png_uint_32 user_height_max)
Definition: pngset.c:1279
void PNGAPI png_set_tIME(png_structp png_ptr, png_infop info_ptr, png_timep mod_time)
Definition: pngset.c:904
RTC::ReturnCode_t ret(RTC::Local::ReturnCode_t r)
png_infop png_charp png_int_32 png_int_32 int int png_charp png_charpp * params
Definition: png.h:2332
png_infop png_int_32 png_int_32 * offset_y
Definition: png.h:2320
#define PNG_FREE_PLTE
Definition: png.h:2096
png_infop png_unknown_chunkp int num_unknowns
Definition: png.h:2485
#define PNG_COLOR_TYPE_RGB_ALPHA
Definition: png.h:1006
#define PNG_FREE_ICCP
Definition: png.h:2089
long png_int_32
Definition: pngconf.h:1117
png_infop png_int_32 * offset_x
Definition: png.h:2320
PNG_CONST char FAR * png_const_charp
Definition: pngconf.h:1202
#define PNG_USER_HEIGHT_MAX
Definition: pngconf.h:798
png_infop int * intent
Definition: png.h:2370
void PNGAPI png_set_sCAL(png_structp png_ptr, png_infop info_ptr, int unit, double width, double height)
Definition: pngset.c:459
png_bytep png_bytep png_size_t length
Definition: png.h:1541
png_uint_32 i
Definition: png.h:2735
#define PNG_INFO_oFFs
Definition: png.h:1075
void PNGAPI png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, int chunk, int location)
Definition: pngset.c:1109
png_infop double double double double * red_y
Definition: png.h:2252
void PNGAPI png_set_gAMA(png_structp png_ptr, png_infop info_ptr, double file_gamma)
Definition: pngset.c:156
png_uint_32 PNGAPI png_permit_mng_features(png_structp png_ptr, png_uint_32 mng_features)
Definition: pngset.c:1138
void PNGAPI png_set_oFFs(png_structp png_ptr, png_infop info_ptr, png_int_32 offset_x, png_int_32 offset_y, int unit_type)
Definition: pngset.c:370
png_text FAR * png_textp
Definition: png.h:654
png_infop png_bytep * trans
Definition: png.h:2435
void PNGAPI png_set_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p sig_bit)
Definition: pngset.c:587
png_infop png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point * int_green_x
Definition: png.h:2258
int empty_plte_permitted
Definition: png.h:1738
void PNGAPI png_set_sPLT(png_structp png_ptr, png_infop info_ptr, png_sPLT_tp entries, int nentries)
Definition: pngset.c:976
png_infop png_charp png_int_32 * X0
Definition: png.h:2332
png_infop png_uint_32 * width
Definition: png.h:2309
png_infop png_bytep int png_color_16p * trans_values
Definition: png.h:2435
png_byte FAR *FAR * png_bytepp
Definition: pngconf.h:1219
png_infop png_charpp int * compression_type
Definition: png.h:2382
png_infop png_fixed_point * int_white_x
Definition: png.h:2258
png_infop png_uint_16p * hist
Definition: png.h:2300
png_infop png_bytepp row_pointers
Definition: png.h:2173
#define PNG_TEXT_COMPRESSION_NONE
Definition: png.h:662
#define png_debug(l, m)
Definition: png.h:2556
#define PNGAPI
Definition: pngconf.h:1386
png_struct FAR * png_structp
Definition: png.h:1108
#define PNG_FREE_ROWS
Definition: png.h:2091
#define PNG_HANDLE_CHUNK_ALWAYS
Definition: png.h:2579
#define PNG_COLOR_MASK_COLOR
Definition: png.h:999
#define PNG_ITXT_COMPRESSION_NONE
Definition: png.h:664
png_time FAR * png_timep
Definition: png.h:683
void PNGAPI png_error(png_structp png_ptr, png_const_charp error_message)
Definition: pngerror.c:36
png_infop png_uint_32 png_uint_32 * height
Definition: png.h:2309
#define PNG_FREE_SPLT
Definition: png.h:2090
png_byte png_uint_32 mmx_rowbytes_threshold
Definition: png.h:2638
unsigned char png_byte
Definition: pngconf.h:1120
#define png_memcpy
Definition: pngconf.h:1465
unsigned short png_uint_16
Definition: pngconf.h:1118
void PNGAPI png_set_cHRM(png_structp png_ptr, png_infop info_ptr, double white_x, double white_y, double red_x, double red_y, double green_x, double green_y, double blue_x, double blue_y)
Definition: pngset.c:36
png_infop int png_uint_32 mask
Definition: png.h:2081
void PNGAPI png_set_pCAL(png_structp png_ptr, png_infop info_ptr, png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams, png_charp units, png_charpp params)
Definition: pngset.c:386
png_byte mmx_bitdepth_threshold
Definition: png.h:2638
png_infop png_bytep int * num_trans
Definition: png.h:2435
#define PNG_COLOR_TYPE_GRAY
Definition: png.h:1003
png_sPLT_entry FAR * png_sPLT_entryp
Definition: png.h:608
void PNGAPI png_warning(png_structp png_ptr, png_const_charp warning_message)
Definition: pngerror.c:102
png_infop png_fixed_point * int_file_gamma
Definition: png.h:2286
#define PNG_FREE_LIST
Definition: png.h:2095
png_uint_16 FAR * png_uint_16p
Definition: pngconf.h:1200
#define PNG_UINT_32_MAX
Definition: png.h:989
png_colorp palette
Definition: png.h:1637
void PNGAPI png_set_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp palette, int num_palette)
Definition: pngset.c:537
#define PNG_FREE_UNKN
Definition: png.h:2094
png_uint_32 png_uint_32 user_height_max
Definition: png.h:2660
png_infop png_fixed_point png_fixed_point * int_white_y
Definition: png.h:2258
#define PNG_INFO_sBIT
Definition: png.h:1068
#define png_debug1(l, m, p1)
Definition: png.h:2559
png_infop int int location
Definition: png.h:2487
png_infop png_uint_32 png_uint_32 int * bit_depth
Definition: png.h:2309
#define PNG_HANDLE_CHUNK_IF_SAFE
Definition: png.h:2578
png_infop png_fixed_point png_fixed_point png_fixed_point png_fixed_point * int_red_y
Definition: png.h:2258
png_infop double * file_gamma
Definition: png.h:2283
int png_set_text_2(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, int num_text)
Definition: pngset.c:741
#define PNG_FLAG_MNG_FILTER_64
Definition: png.h:1156
#define PNG_INFO_PLTE
Definition: png.h:1070
int png_bytep chunk_list
Definition: png.h:2483
void PNGAPI png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size)
Definition: pngset.c:1228
#define PNG_FREE_ME_SUPPORTED
Definition: pngconf.h:540
png_infop png_textp int * num_text
Definition: png.h:2407
png_infop png_sPLT_tpp entries
Definition: png.h:2396
#define PNG_FILTER_TYPE_BASE
Definition: png.h:1017
typedef int
Definition: png.h:1113
int png_bytep int num_chunks
Definition: png.h:2483
#define PNG_COLOR_MASK_ALPHA
Definition: png.h:1000
#define PNG_INFO_IDAT
Definition: png.h:1082
png_infop png_charp * purpose
Definition: png.h:2332
png_voidp png_user_chunk_ptr read_user_chunk_fn
Definition: png.h:2022
#define PNG_COMPRESSION_TYPE_BASE
Definition: png.h:1013
png_uint_32 asm_flags
Definition: png.h:2634
#define PNG_INFO_tRNS
Definition: png.h:1071
png_infop png_uint_32 png_uint_32 int int * color_type
Definition: png.h:2309
png_infop double double double double double double * green_y
Definition: png.h:2252
png_sPLT_t FAR * png_sPLT_tp
Definition: png.h:623
png_infop double double * white_y
Definition: png.h:2252
png_infop png_charp png_int_32 png_int_32 int int * nparams
Definition: png.h:2332
png_color_8 FAR * png_color_8p
Definition: png.h:593
png_infop png_sPLT_tp int nentries
Definition: png.h:2401
png_uint_32 user_width_max
Definition: png.h:2660
void FAR * png_voidp
Definition: pngconf.h:1196
png_int_32 png_fixed_point
Definition: pngconf.h:1193
png_infop double double double * red_x
Definition: png.h:2252
char FAR *FAR * png_charpp
Definition: pngconf.h:1225
#define PNG_FREE_PCAL
Definition: png.h:2092
size_t png_size_t
Definition: pngconf.h:1128
png_infop png_int_32 png_int_32 int * unit_type
Definition: png.h:2320
void PNGAPI png_set_invalid(png_structp png_ptr, png_infop info_ptr, int mask)
Definition: pngset.c:1242
#define PNG_INTRAPIXEL_DIFFERENCING
Definition: png.h:1018
#define PNG_FLAG_MNG_EMPTY_PLTE
Definition: png.h:1155
void PNGAPI png_set_text(png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, int num_text)
Definition: pngset.c:731
void PNGAPI png_set_read_user_chunk_fn(png_structp png_ptr, png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn)
Definition: pngset.c:1198
#define PNG_INFO_sPLT
Definition: png.h:1080
Definition: png.h:600
void PNGAPI png_permit_empty_plte(png_structp png_ptr, int empty_plte_permitted)
Definition: pngset.c:1122
void PNGAPI png_set_tRNS(png_structp png_ptr, png_infop info_ptr, png_bytep trans, int num_trans, png_color_16p trans_values)
Definition: pngset.c:918
png_infop info_ptr
Definition: png.h:1571
png_infop double double double double double * green_x
Definition: png.h:2252
void PNGAPI png_set_pHYs(png_structp png_ptr, png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type)
Definition: pngset.c:522
unsigned long png_uint_32
Definition: pngconf.h:1116
png_infop int chunk
Definition: png.h:2487
void PNGAPI png_free(png_structp png_ptr, png_voidp ptr)
Definition: pngmem.c:498
#define png_debug2(l, m, p1, p2)
Definition: png.h:2562
#define PNG_INFO_pHYs
Definition: png.h:1074
#define PNG_INFO_pCAL
Definition: png.h:1077
#define PNG_FREE_SCAL
Definition: png.h:2093
#define PNG_INFO_cHRM
Definition: png.h:1069
png_infop double * white_x
Definition: png.h:2252
png_infop png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point * int_green_y
Definition: png.h:2258
png_infop png_timep * mod_time
Definition: png.h:2425
#define PNG_INFO_bKGD
Definition: png.h:1072
void PNGAPI png_set_keep_unknown_chunks(png_structp png_ptr, int keep, png_bytep chunk_list, int num_chunks)
Definition: pngset.c:1151
png_infop png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point png_fixed_point * int_blue_x
Definition: png.h:2258
png_voidp PNGAPI png_malloc(png_structp png_ptr, png_uint_32 size)
Definition: pngmem.c:429
png_voidp PNGAPI png_malloc_warn(png_structp png_ptr, png_uint_32 size)
Definition: pngmem.c:541
void PNGAPI png_set_sRGB(png_structp png_ptr, png_infop info_ptr, int intent)
Definition: pngset.c:601
#define PNG_INFO_iCCP
Definition: png.h:1079
int keep
Definition: png.h:2483
unsigned int uInt
Definition: zconf.h:263
png_infop png_unknown_chunkp unknowns
Definition: png.h:2485
#define png_sizeof(x)
Definition: pngconf.h:1129
#define PNG_FREE_TRNS
Definition: png.h:2097
#define PNG_INFO_sCAL
Definition: png.h:1081
void PNGAPI png_set_gAMA_fixed(png_structp png_ptr, png_infop info_ptr, png_fixed_point int_gamma)
Definition: pngset.c:181
png_infop png_color_8p * sig_bit
Definition: png.h:2360
png_color FAR * png_colorp
Definition: png.h:571
png_info FAR * png_infop
Definition: png.h:984


openhrp3
Author(s): AIST, General Robotix Inc., Nakamura Lab of Dept. of Mechano Informatics at University of Tokyo
autogenerated on Thu Sep 8 2022 02:24:05