zenilib: zenilib/jni/external/libpng/pngget.c Source File

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pngget.c
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1
2 /* pngget.c - retrieval of values from 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 */
14
15 #include "pngpriv.h"
16
17 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
18
19 png_uint_32 PNGAPI
20 png_get_valid(png_const_structp png_ptr, png_const_infop info_ptr,
21 png_uint_32 flag)
22 {
23 if (png_ptr != NULL && info_ptr != NULL)
24 return(info_ptr->valid & flag);
25
26 return(0);
27 }
28
29 png_size_t PNGAPI
30 png_get_rowbytes(png_const_structp png_ptr, png_const_infop info_ptr)
31 {
32 if (png_ptr != NULL && info_ptr != NULL)
33 return(info_ptr->rowbytes);
34
35 return(0);
36 }
37
38 #ifdef PNG_INFO_IMAGE_SUPPORTED
39 png_bytepp PNGAPI
40 png_get_rows(png_const_structp png_ptr, png_const_infop info_ptr)
41 {
42 if (png_ptr != NULL && info_ptr != NULL)
43 return(info_ptr->row_pointers);
44
45 return(0);
46 }
47 #endif
48
49 #ifdef PNG_EASY_ACCESS_SUPPORTED
50 /* Easy access to info, added in libpng-0.99 */
51 png_uint_32 PNGAPI
52 png_get_image_width(png_const_structp png_ptr, png_const_infop info_ptr)
53 {
54 if (png_ptr != NULL && info_ptr != NULL)
55 return info_ptr->width;
56
57 return (0);
58 }
59
60 png_uint_32 PNGAPI
61 png_get_image_height(png_const_structp png_ptr, png_const_infop info_ptr)
62 {
63 if (png_ptr != NULL && info_ptr != NULL)
64 return info_ptr->height;
65
66 return (0);
67 }
68
69 png_byte PNGAPI
70 png_get_bit_depth(png_const_structp png_ptr, png_const_infop info_ptr)
71 {
72 if (png_ptr != NULL && info_ptr != NULL)
73 return info_ptr->bit_depth;
74
75 return (0);
76 }
77
78 png_byte PNGAPI
79 png_get_color_type(png_const_structp png_ptr, png_const_infop info_ptr)
80 {
81 if (png_ptr != NULL && info_ptr != NULL)
82 return info_ptr->color_type;
83
84 return (0);
85 }
86
87 png_byte PNGAPI
88 png_get_filter_type(png_const_structp png_ptr, png_const_infop info_ptr)
89 {
90 if (png_ptr != NULL && info_ptr != NULL)
91 return info_ptr->filter_type;
92
93 return (0);
94 }
95
96 png_byte PNGAPI
97 png_get_interlace_type(png_const_structp png_ptr, png_const_infop info_ptr)
98 {
99 if (png_ptr != NULL && info_ptr != NULL)
100 return info_ptr->interlace_type;
101
102 return (0);
103 }
104
105 png_byte PNGAPI
106 png_get_compression_type(png_const_structp png_ptr, png_const_infop info_ptr)
107 {
108 if (png_ptr != NULL && info_ptr != NULL)
109 return info_ptr->compression_type;
110
111 return (0);
112 }
113
114 png_uint_32 PNGAPI
115 png_get_x_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
116 {
117 #ifdef PNG_pHYs_SUPPORTED
118 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
119 {
120 png_debug1(1, "in %s retrieval function",
121 "png_get_x_pixels_per_meter");
122
123 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
124 return (info_ptr->x_pixels_per_unit);
125 }
126 #endif
127
128 return (0);
129 }
130
131 png_uint_32 PNGAPI
132 png_get_y_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
133 {
134 #ifdef PNG_pHYs_SUPPORTED
135 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
136 {
137 png_debug1(1, "in %s retrieval function",
138 "png_get_y_pixels_per_meter");
139
140 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
141 return (info_ptr->y_pixels_per_unit);
142 }
143 #endif
144
145 return (0);
146 }
147
148 png_uint_32 PNGAPI
149 png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
150 {
151 #ifdef PNG_pHYs_SUPPORTED
152 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
153 {
154 png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
155
156 if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER &&
157 info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
158 return (info_ptr->x_pixels_per_unit);
159 }
160 #endif
161
162 return (0);
163 }
164
165 #ifdef PNG_FLOATING_POINT_SUPPORTED
166 float PNGAPI
167 png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
168 {
169 #ifdef PNG_READ_pHYs_SUPPORTED
170 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
171 {
172 png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
173
174 if (info_ptr->x_pixels_per_unit != 0)
175 return ((float)((float)info_ptr->y_pixels_per_unit
176 /(float)info_ptr->x_pixels_per_unit));
177 }
178 #endif
179
180 return ((float)0.0);
181 }
182 #endif
183
184 #ifdef PNG_FIXED_POINT_SUPPORTED
185 png_fixed_point PNGAPI
186 png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr,
187 png_const_infop info_ptr)
188 {
189 #ifdef PNG_READ_pHYs_SUPPORTED
190 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)
191 && info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0
192 && info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX
193 && info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
194 {
195 png_fixed_point res;
196
197 png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed");
198
199 /* The following casts work because a PNG 4 byte integer only has a valid
200 * range of 0..2^31-1; otherwise the cast might overflow.
201 */
202 if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1,
203 (png_int_32)info_ptr->x_pixels_per_unit))
204 return res;
205 }
206 #endif
207
208 return 0;
209 }
210 #endif
211
212 png_int_32 PNGAPI
213 png_get_x_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
214 {
215 #ifdef PNG_oFFs_SUPPORTED
216 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
217 {
218 png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
219
220 if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
221 return (info_ptr->x_offset);
222 }
223 #endif
224
225 return (0);
226 }
227
228 png_int_32 PNGAPI
229 png_get_y_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
230 {
231 #ifdef PNG_oFFs_SUPPORTED
232 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
233 {
234 png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
235
236 if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
237 return (info_ptr->y_offset);
238 }
239 #endif
240
241 return (0);
242 }
243
244 png_int_32 PNGAPI
245 png_get_x_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
246 {
247 #ifdef PNG_oFFs_SUPPORTED
248 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
249 {
250 png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
251
252 if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
253 return (info_ptr->x_offset);
254 }
255 #endif
256
257 return (0);
258 }
259
260 png_int_32 PNGAPI
261 png_get_y_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
262 {
263 #ifdef PNG_oFFs_SUPPORTED
264 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
265 {
266 png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
267
268 if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
269 return (info_ptr->y_offset);
270 }
271 #endif
272
273 return (0);
274 }
275
276 #ifdef PNG_INCH_CONVERSIONS_SUPPORTED
277 static png_uint_32
278 ppi_from_ppm(png_uint_32 ppm)
279 {
280 #if 0
281 /* The conversion is *(2.54/100), in binary (32 digits):
282 * .00000110100000001001110101001001
283 */
284 png_uint_32 t1001, t1101;
285 ppm >>= 1; /* .1 */
286 t1001 = ppm + (ppm >> 3); /* .1001 */
287 t1101 = t1001 + (ppm >> 1); /* .1101 */
288 ppm >>= 20; /* .000000000000000000001 */
289 t1101 += t1101 >> 15; /* .1101000000000001101 */
290 t1001 >>= 11; /* .000000000001001 */
291 t1001 += t1001 >> 12; /* .000000000001001000000001001 */
292 ppm += t1001; /* .000000000001001000001001001 */
293 ppm += t1101; /* .110100000001001110101001001 */
294 return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */
295 #else
296 /* The argument is a PNG unsigned integer, so it is not permitted
297 * to be bigger than 2^31.
298 */
299 png_fixed_point result;
300 if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
301 5000))
302 return result;
303
304 /* Overflow. */
305 return 0;
306 #endif
307 }
308
309 png_uint_32 PNGAPI
310 png_get_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
311 {
312 return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr));
313 }
314
315 png_uint_32 PNGAPI
316 png_get_x_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
317 {
318 return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr));
319 }
320
321 png_uint_32 PNGAPI
322 png_get_y_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
323 {
324 return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr));
325 }
326
327 #ifdef PNG_FIXED_POINT_SUPPORTED
328 static png_fixed_point
329 png_fixed_inches_from_microns(png_structp png_ptr, png_int_32 microns)
330 {
331 /* Convert from metres * 1,000,000 to inches * 100,000, meters to
332 * inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
333 * Notice that this can overflow - a warning is output and 0 is
334 * returned.
335 */
336 return png_muldiv_warn(png_ptr, microns, 500, 127);
337 }
338
339 png_fixed_point PNGAPI
340 png_get_x_offset_inches_fixed(png_structp png_ptr,
341 png_const_infop info_ptr)
342 {
343 return png_fixed_inches_from_microns(png_ptr,
344 png_get_x_offset_microns(png_ptr, info_ptr));
345 }
346 #endif
347
348 #ifdef PNG_FIXED_POINT_SUPPORTED
349 png_fixed_point PNGAPI
350 png_get_y_offset_inches_fixed(png_structp png_ptr,
351 png_const_infop info_ptr)
352 {
353 return png_fixed_inches_from_microns(png_ptr,
354 png_get_y_offset_microns(png_ptr, info_ptr));
355 }
356 #endif
357
358 #ifdef PNG_FLOATING_POINT_SUPPORTED
359 float PNGAPI
360 png_get_x_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
361 {
362 /* To avoid the overflow do the conversion directly in floating
363 * point.
364 */
365 return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937);
366 }
367 #endif
368
369 #ifdef PNG_FLOATING_POINT_SUPPORTED
370 float PNGAPI
371 png_get_y_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
372 {
373 /* To avoid the overflow do the conversion directly in floating
374 * point.
375 */
376 return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937);
377 }
378 #endif
379
380 #ifdef PNG_pHYs_SUPPORTED
381 png_uint_32 PNGAPI
382 png_get_pHYs_dpi(png_const_structp png_ptr, png_const_infop info_ptr,
383 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
384 {
385 png_uint_32 retval = 0;
386
387 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
388 {
389 png_debug1(1, "in %s retrieval function", "pHYs");
390
391 if (res_x != NULL)
392 {
393 *res_x = info_ptr->x_pixels_per_unit;
394 retval |= PNG_INFO_pHYs;
395 }
396
397 if (res_y != NULL)
398 {
399 *res_y = info_ptr->y_pixels_per_unit;
400 retval |= PNG_INFO_pHYs;
401 }
402
403 if (unit_type != NULL)
404 {
405 *unit_type = (int)info_ptr->phys_unit_type;
406 retval |= PNG_INFO_pHYs;
407
408 if (*unit_type == 1)
409 {
410 if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
411 if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
412 }
413 }
414 }
415
416 return (retval);
417 }
418 #endif /* PNG_pHYs_SUPPORTED */
419 #endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
420
421 /* png_get_channels really belongs in here, too, but it's been around longer */
422
423 #endif /* PNG_EASY_ACCESS_SUPPORTED */
424
425 png_byte PNGAPI
426 png_get_channels(png_const_structp png_ptr, png_const_infop info_ptr)
427 {
428 if (png_ptr != NULL && info_ptr != NULL)
429 return(info_ptr->channels);
430
431 return (0);
432 }
433
434 png_const_bytep PNGAPI
435 png_get_signature(png_const_structp png_ptr, png_infop info_ptr)
436 {
437 if (png_ptr != NULL && info_ptr != NULL)
438 return(info_ptr->signature);
439
440 return (NULL);
441 }
442
443 #ifdef PNG_bKGD_SUPPORTED
444 png_uint_32 PNGAPI
445 png_get_bKGD(png_const_structp png_ptr, png_infop info_ptr,
446 png_color_16p *background)
447 {
448 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
449 && background != NULL)
450 {
451 png_debug1(1, "in %s retrieval function", "bKGD");
452
453 *background = &(info_ptr->background);
454 return (PNG_INFO_bKGD);
455 }
456
457 return (0);
458 }
459 #endif
460
461 #ifdef PNG_cHRM_SUPPORTED
462 /* The XYZ APIs were added in 1.5.5 to take advantage of the code added at the
463 * same time to correct the rgb grayscale coefficient defaults obtained from the
464 * cHRM chunk in 1.5.4
465 */
466 png_uint_32 PNGFAPI
467 png_get_cHRM_XYZ_fixed(png_structp png_ptr, png_const_infop info_ptr,
468 png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
469 png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
470 png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
471 png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
472 png_fixed_point *int_blue_Z)
473 {
474 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
475 {
476 png_xy xy;
477 png_XYZ XYZ;
478
479 png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
480
481 xy.whitex = info_ptr->x_white;
482 xy.whitey = info_ptr->y_white;
483 xy.redx = info_ptr->x_red;
484 xy.redy = info_ptr->y_red;
485 xy.greenx = info_ptr->x_green;
486 xy.greeny = info_ptr->y_green;
487 xy.bluex = info_ptr->x_blue;
488 xy.bluey = info_ptr->y_blue;
489
490 /* The *_checked function handles error reporting, so just return 0 if
491 * there is a failure here.
492 */
493 if (png_XYZ_from_xy_checked(png_ptr, &XYZ, xy))
494 {
495 if (int_red_X != NULL)
496 *int_red_X = XYZ.redX;
497 if (int_red_Y != NULL)
498 *int_red_Y = XYZ.redY;
499 if (int_red_Z != NULL)
500 *int_red_Z = XYZ.redZ;
501 if (int_green_X != NULL)
502 *int_green_X = XYZ.greenX;
503 if (int_green_Y != NULL)
504 *int_green_Y = XYZ.greenY;
505 if (int_green_Z != NULL)
506 *int_green_Z = XYZ.greenZ;
507 if (int_blue_X != NULL)
508 *int_blue_X = XYZ.blueX;
509 if (int_blue_Y != NULL)
510 *int_blue_Y = XYZ.blueY;
511 if (int_blue_Z != NULL)
512 *int_blue_Z = XYZ.blueZ;
513
514 return (PNG_INFO_cHRM);
515 }
516 }
517
518 return (0);
519 }
520
521 # ifdef PNG_FLOATING_POINT_SUPPORTED
522 png_uint_32 PNGAPI
523 png_get_cHRM(png_const_structp png_ptr, png_const_infop info_ptr,
524 double *white_x, double *white_y, double *red_x, double *red_y,
525 double *green_x, double *green_y, double *blue_x, double *blue_y)
526 {
527 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
528 {
529 png_debug1(1, "in %s retrieval function", "cHRM");
530
531 if (white_x != NULL)
532 *white_x = png_float(png_ptr, info_ptr->x_white, "cHRM white X");
533 if (white_y != NULL)
534 *white_y = png_float(png_ptr, info_ptr->y_white, "cHRM white Y");
535 if (red_x != NULL)
536 *red_x = png_float(png_ptr, info_ptr->x_red, "cHRM red X");
537 if (red_y != NULL)
538 *red_y = png_float(png_ptr, info_ptr->y_red, "cHRM red Y");
539 if (green_x != NULL)
540 *green_x = png_float(png_ptr, info_ptr->x_green, "cHRM green X");
541 if (green_y != NULL)
542 *green_y = png_float(png_ptr, info_ptr->y_green, "cHRM green Y");
543 if (blue_x != NULL)
544 *blue_x = png_float(png_ptr, info_ptr->x_blue, "cHRM blue X");
545 if (blue_y != NULL)
546 *blue_y = png_float(png_ptr, info_ptr->y_blue, "cHRM blue Y");
547 return (PNG_INFO_cHRM);
548 }
549
550 return (0);
551 }
552
553 png_uint_32 PNGAPI
554 png_get_cHRM_XYZ(png_structp png_ptr, png_const_infop info_ptr,
555 double *red_X, double *red_Y, double *red_Z, double *green_X,
556 double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
557 double *blue_Z)
558 {
559 png_XYZ XYZ;
560
561 if (png_get_cHRM_XYZ_fixed(png_ptr, info_ptr,
562 &XYZ.redX, &XYZ.redY, &XYZ.redZ, &XYZ.greenX, &XYZ.greenY, &XYZ.greenZ,
563 &XYZ.blueX, &XYZ.blueY, &XYZ.blueZ) & PNG_INFO_cHRM)
564 {
565 if (red_X != NULL)
566 *red_X = png_float(png_ptr, XYZ.redX, "cHRM red X");
567 if (red_Y != NULL)
568 *red_Y = png_float(png_ptr, XYZ.redY, "cHRM red Y");
569 if (red_Z != NULL)
570 *red_Z = png_float(png_ptr, XYZ.redZ, "cHRM red Z");
571 if (green_X != NULL)
572 *green_X = png_float(png_ptr, XYZ.greenX, "cHRM green X");
573 if (green_Y != NULL)
574 *green_Y = png_float(png_ptr, XYZ.greenY, "cHRM green Y");
575 if (green_Z != NULL)
576 *green_Z = png_float(png_ptr, XYZ.greenZ, "cHRM green Z");
577 if (blue_X != NULL)
578 *blue_X = png_float(png_ptr, XYZ.blueX, "cHRM blue X");
579 if (blue_Y != NULL)
580 *blue_Y = png_float(png_ptr, XYZ.blueY, "cHRM blue Y");
581 if (blue_Z != NULL)
582 *blue_Z = png_float(png_ptr, XYZ.blueZ, "cHRM blue Z");
583 return (PNG_INFO_cHRM);
584 }
585
586 return (0);
587 }
588 # endif
589
590 # ifdef PNG_FIXED_POINT_SUPPORTED
591 png_uint_32 PNGAPI
592 png_get_cHRM_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
593 png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
594 png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
595 png_fixed_point *blue_x, png_fixed_point *blue_y)
596 {
597 png_debug1(1, "in %s retrieval function", "cHRM");
598
599 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
600 {
601 if (white_x != NULL)
602 *white_x = info_ptr->x_white;
603 if (white_y != NULL)
604 *white_y = info_ptr->y_white;
605 if (red_x != NULL)
606 *red_x = info_ptr->x_red;
607 if (red_y != NULL)
608 *red_y = info_ptr->y_red;
609 if (green_x != NULL)
610 *green_x = info_ptr->x_green;
611 if (green_y != NULL)
612 *green_y = info_ptr->y_green;
613 if (blue_x != NULL)
614 *blue_x = info_ptr->x_blue;
615 if (blue_y != NULL)
616 *blue_y = info_ptr->y_blue;
617 return (PNG_INFO_cHRM);
618 }
619
620 return (0);
621 }
622 # endif
623 #endif
624
625 #ifdef PNG_gAMA_SUPPORTED
626 png_uint_32 PNGFAPI
627 png_get_gAMA_fixed(png_const_structp png_ptr, png_const_infop info_ptr,
628 png_fixed_point *file_gamma)
629 {
630 png_debug1(1, "in %s retrieval function", "gAMA");
631
632 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
633 && file_gamma != NULL)
634 {
635 *file_gamma = info_ptr->gamma;
636 return (PNG_INFO_gAMA);
637 }
638
639 return (0);
640 }
641 # ifdef PNG_FLOATING_POINT_SUPPORTED
642 png_uint_32 PNGAPI
643 png_get_gAMA(png_const_structp png_ptr, png_const_infop info_ptr,
644 double *file_gamma)
645 {
646 png_fixed_point igamma;
647 png_uint_32 ok = png_get_gAMA_fixed(png_ptr, info_ptr, &igamma);
648
649 if (ok)
650 *file_gamma = png_float(png_ptr, igamma, "png_get_gAMA");
651
652 return ok;
653 }
654
655 # endif
656 #endif
657
658 #ifdef PNG_sRGB_SUPPORTED
659 png_uint_32 PNGAPI
660 png_get_sRGB(png_const_structp png_ptr, png_const_infop info_ptr,
661 int *file_srgb_intent)
662 {
663 png_debug1(1, "in %s retrieval function", "sRGB");
664
665 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
666 && file_srgb_intent != NULL)
667 {
668 *file_srgb_intent = (int)info_ptr->srgb_intent;
669 return (PNG_INFO_sRGB);
670 }
671
672 return (0);
673 }
674 #endif
675
676 #ifdef PNG_iCCP_SUPPORTED
677 png_uint_32 PNGAPI
678 png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr,
679 png_charpp name, int *compression_type,
680 png_bytepp profile, png_uint_32 *proflen)
681 {
682 png_debug1(1, "in %s retrieval function", "iCCP");
683
684 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
685 && name != NULL && compression_type != NULL && profile != NULL &&
686 proflen != NULL)
687 {
688 *name = info_ptr->iccp_name;
689 *profile = info_ptr->iccp_profile;
690 /* Compression_type is a dummy so the API won't have to change
691 * if we introduce multiple compression types later.
692 */
693 *proflen = info_ptr->iccp_proflen;
694 *compression_type = info_ptr->iccp_compression;
695 return (PNG_INFO_iCCP);
696 }
697
698 return (0);
699 }
700 #endif
701
702 #ifdef PNG_sPLT_SUPPORTED
703 png_uint_32 PNGAPI
704 png_get_sPLT(png_const_structp png_ptr, png_const_infop info_ptr,
705 png_sPLT_tpp spalettes)
706 {
707 if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
708 {
709 *spalettes = info_ptr->splt_palettes;
710 return ((png_uint_32)info_ptr->splt_palettes_num);
711 }
712
713 return (0);
714 }
715 #endif
716
717 #ifdef PNG_hIST_SUPPORTED
718 png_uint_32 PNGAPI
719 png_get_hIST(png_const_structp png_ptr, png_const_infop info_ptr,
720 png_uint_16p *hist)
721 {
722 png_debug1(1, "in %s retrieval function", "hIST");
723
724 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
725 && hist != NULL)
726 {
727 *hist = info_ptr->hist;
728 return (PNG_INFO_hIST);
729 }
730
731 return (0);
732 }
733 #endif
734
735 png_uint_32 PNGAPI
736 png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
737 png_uint_32 *width, png_uint_32 *height, int *bit_depth,
738 int *color_type, int *interlace_type, int *compression_type,
739 int *filter_type)
740
741 {
742 png_debug1(1, "in %s retrieval function", "IHDR");
743
744 if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
745 height == NULL || bit_depth == NULL || color_type == NULL)
746 return (0);
747
748 *width = info_ptr->width;
749 *height = info_ptr->height;
750 *bit_depth = info_ptr->bit_depth;
751 *color_type = info_ptr->color_type;
752
753 if (compression_type != NULL)
754 *compression_type = info_ptr->compression_type;
755
756 if (filter_type != NULL)
757 *filter_type = info_ptr->filter_type;
758
759 if (interlace_type != NULL)
760 *interlace_type = info_ptr->interlace_type;
761
762 /* This is redundant if we can be sure that the info_ptr values were all
763 * assigned in png_set_IHDR(). We do the check anyhow in case an
764 * application has ignored our advice not to mess with the members
765 * of info_ptr directly.
766 */
767 png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
768 info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
769 info_ptr->compression_type, info_ptr->filter_type);
770
771 return (1);
772 }
773
774 #ifdef PNG_oFFs_SUPPORTED
775 png_uint_32 PNGAPI
776 png_get_oFFs(png_const_structp png_ptr, png_const_infop info_ptr,
777 png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
778 {
779 png_debug1(1, "in %s retrieval function", "oFFs");
780
781 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
782 && offset_x != NULL && offset_y != NULL && unit_type != NULL)
783 {
784 *offset_x = info_ptr->x_offset;
785 *offset_y = info_ptr->y_offset;
786 *unit_type = (int)info_ptr->offset_unit_type;
787 return (PNG_INFO_oFFs);
788 }
789
790 return (0);
791 }
792 #endif
793
794 #ifdef PNG_pCAL_SUPPORTED
795 png_uint_32 PNGAPI
796 png_get_pCAL(png_const_structp png_ptr, png_const_infop info_ptr,
797 png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
798 png_charp *units, png_charpp *params)
799 {
800 png_debug1(1, "in %s retrieval function", "pCAL");
801
802 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
803 && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
804 nparams != NULL && units != NULL && params != NULL)
805 {
806 *purpose = info_ptr->pcal_purpose;
807 *X0 = info_ptr->pcal_X0;
808 *X1 = info_ptr->pcal_X1;
809 *type = (int)info_ptr->pcal_type;
810 *nparams = (int)info_ptr->pcal_nparams;
811 *units = info_ptr->pcal_units;
812 *params = info_ptr->pcal_params;
813 return (PNG_INFO_pCAL);
814 }
815
816 return (0);
817 }
818 #endif
819
820 #ifdef PNG_sCAL_SUPPORTED
821 # ifdef PNG_FIXED_POINT_SUPPORTED
822 # ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
823 png_uint_32 PNGAPI
824 png_get_sCAL_fixed(png_structp png_ptr, png_const_infop info_ptr,
825 int *unit, png_fixed_point *width, png_fixed_point *height)
826 {
827 if (png_ptr != NULL && info_ptr != NULL &&
828 (info_ptr->valid & PNG_INFO_sCAL))
829 {
830 *unit = info_ptr->scal_unit;
831 /*TODO: make this work without FP support */
832 *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
833 *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
834 "sCAL height");
835 return (PNG_INFO_sCAL);
836 }
837
838 return(0);
839 }
840 # endif /* FLOATING_ARITHMETIC */
841 # endif /* FIXED_POINT */
842 # ifdef PNG_FLOATING_POINT_SUPPORTED
843 png_uint_32 PNGAPI
844 png_get_sCAL(png_const_structp png_ptr, png_const_infop info_ptr,
845 int *unit, double *width, double *height)
846 {
847 if (png_ptr != NULL && info_ptr != NULL &&
848 (info_ptr->valid & PNG_INFO_sCAL))
849 {
850 *unit = info_ptr->scal_unit;
851 *width = atof(info_ptr->scal_s_width);
852 *height = atof(info_ptr->scal_s_height);
853 return (PNG_INFO_sCAL);
854 }
855
856 return(0);
857 }
858 # endif /* FLOATING POINT */
859 png_uint_32 PNGAPI
860 png_get_sCAL_s(png_const_structp png_ptr, png_const_infop info_ptr,
861 int *unit, png_charpp width, png_charpp height)
862 {
863 if (png_ptr != NULL && info_ptr != NULL &&
864 (info_ptr->valid & PNG_INFO_sCAL))
865 {
866 *unit = info_ptr->scal_unit;
867 *width = info_ptr->scal_s_width;
868 *height = info_ptr->scal_s_height;
869 return (PNG_INFO_sCAL);
870 }
871
872 return(0);
873 }
874 #endif /* sCAL */
875
876 #ifdef PNG_pHYs_SUPPORTED
877 png_uint_32 PNGAPI
878 png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr,
879 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
880 {
881 png_uint_32 retval = 0;
882
883 png_debug1(1, "in %s retrieval function", "pHYs");
884
885 if (png_ptr != NULL && info_ptr != NULL &&
886 (info_ptr->valid & PNG_INFO_pHYs))
887 {
888 if (res_x != NULL)
889 {
890 *res_x = info_ptr->x_pixels_per_unit;
891 retval |= PNG_INFO_pHYs;
892 }
893
894 if (res_y != NULL)
895 {
896 *res_y = info_ptr->y_pixels_per_unit;
897 retval |= PNG_INFO_pHYs;
898 }
899
900 if (unit_type != NULL)
901 {
902 *unit_type = (int)info_ptr->phys_unit_type;
903 retval |= PNG_INFO_pHYs;
904 }
905 }
906
907 return (retval);
908 }
909 #endif /* pHYs */
910
911 png_uint_32 PNGAPI
912 png_get_PLTE(png_const_structp png_ptr, png_const_infop info_ptr,
913 png_colorp *palette, int *num_palette)
914 {
915 png_debug1(1, "in %s retrieval function", "PLTE");
916
917 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
918 && palette != NULL)
919 {
920 *palette = info_ptr->palette;
921 *num_palette = info_ptr->num_palette;
922 png_debug1(3, "num_palette = %d", *num_palette);
923 return (PNG_INFO_PLTE);
924 }
925
926 return (0);
927 }
928
929 #ifdef PNG_sBIT_SUPPORTED
930 png_uint_32 PNGAPI
931 png_get_sBIT(png_const_structp png_ptr, png_infop info_ptr,
932 png_color_8p *sig_bit)
933 {
934 png_debug1(1, "in %s retrieval function", "sBIT");
935
936 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
937 && sig_bit != NULL)
938 {
939 *sig_bit = &(info_ptr->sig_bit);
940 return (PNG_INFO_sBIT);
941 }
942
943 return (0);
944 }
945 #endif
946
947 #ifdef PNG_TEXT_SUPPORTED
948 png_uint_32 PNGAPI
949 png_get_text(png_const_structp png_ptr, png_const_infop info_ptr,
950 png_textp *text_ptr, int *num_text)
951 {
952 if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
953 {
954 png_debug1(1, "in 0x%lx retrieval function",
955 (unsigned long)png_ptr->chunk_name);
956
957 if (text_ptr != NULL)
958 *text_ptr = info_ptr->text;
959
960 if (num_text != NULL)
961 *num_text = info_ptr->num_text;
962
963 return ((png_uint_32)info_ptr->num_text);
964 }
965
966 if (num_text != NULL)
967 *num_text = 0;
968
969 return(0);
970 }
971 #endif
972
973 #ifdef PNG_tIME_SUPPORTED
974 png_uint_32 PNGAPI
975 png_get_tIME(png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
976 {
977 png_debug1(1, "in %s retrieval function", "tIME");
978
979 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
980 && mod_time != NULL)
981 {
982 *mod_time = &(info_ptr->mod_time);
983 return (PNG_INFO_tIME);
984 }
985
986 return (0);
987 }
988 #endif
989
990 #ifdef PNG_tRNS_SUPPORTED
991 png_uint_32 PNGAPI
992 png_get_tRNS(png_const_structp png_ptr, png_infop info_ptr,
993 png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
994 {
995 png_uint_32 retval = 0;
996 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
997 {
998 png_debug1(1, "in %s retrieval function", "tRNS");
999
1000 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
1001 {
1002 if (trans_alpha != NULL)
1003 {
1004 *trans_alpha = info_ptr->trans_alpha;
1005 retval |= PNG_INFO_tRNS;
1006 }
1007
1008 if (trans_color != NULL)
1009 *trans_color = &(info_ptr->trans_color);
1010 }
1011
1012 else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
1013 {
1014 if (trans_color != NULL)
1015 {
1016 *trans_color = &(info_ptr->trans_color);
1017 retval |= PNG_INFO_tRNS;
1018 }
1019
1020 if (trans_alpha != NULL)
1021 *trans_alpha = NULL;
1022 }
1023
1024 if (num_trans != NULL)
1025 {
1026 *num_trans = info_ptr->num_trans;
1027 retval |= PNG_INFO_tRNS;
1028 }
1029 }
1030
1031 return (retval);
1032 }
1033 #endif
1034
1035 #ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
1036 int PNGAPI
1037 png_get_unknown_chunks(png_const_structp png_ptr, png_const_infop info_ptr,
1038 png_unknown_chunkpp unknowns)
1039 {
1040 if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
1041 {
1042 *unknowns = info_ptr->unknown_chunks;
1043 return info_ptr->unknown_chunks_num;
1044 }
1045
1046 return (0);
1047 }
1048 #endif
1049
1050 #ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
1051 png_byte PNGAPI
1052 png_get_rgb_to_gray_status (png_const_structp png_ptr)
1053 {
1054 return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
1055 }
1056 #endif
1057
1058 #ifdef PNG_USER_CHUNKS_SUPPORTED
1059 png_voidp PNGAPI
1060 png_get_user_chunk_ptr(png_const_structp png_ptr)
1061 {
1062 return (png_ptr ? png_ptr->user_chunk_ptr : NULL);
1063 }
1064 #endif
1065
1066 png_size_t PNGAPI
1067 png_get_compression_buffer_size(png_const_structp png_ptr)
1068 {
1069 return (png_ptr ? png_ptr->zbuf_size : 0);
1070 }
1071
1072 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
1073 /* These functions were added to libpng 1.2.6 and were enabled
1074 * by default in libpng-1.4.0 */
1075 png_uint_32 PNGAPI
1076 png_get_user_width_max (png_const_structp png_ptr)
1077 {
1078 return (png_ptr ? png_ptr->user_width_max : 0);
1079 }
1080
1081 png_uint_32 PNGAPI
1082 png_get_user_height_max (png_const_structp png_ptr)
1083 {
1084 return (png_ptr ? png_ptr->user_height_max : 0);
1085 }
1086
1087 /* This function was added to libpng 1.4.0 */
1088 png_uint_32 PNGAPI
1089 png_get_chunk_cache_max (png_const_structp png_ptr)
1090 {
1091 return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
1092 }
1093
1094 /* This function was added to libpng 1.4.1 */
1095 png_alloc_size_t PNGAPI
1096 png_get_chunk_malloc_max (png_const_structp png_ptr)
1097 {
1098 return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
1099 }
1100 #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
1101
1102 /* These functions were added to libpng 1.4.0 */
1103 #ifdef PNG_IO_STATE_SUPPORTED
1104 png_uint_32 PNGAPI
1105 png_get_io_state (png_structp png_ptr)
1106 {
1107 return png_ptr->io_state;
1108 }
1109
1110 png_uint_32 PNGAPI
1111 png_get_io_chunk_type (png_const_structp png_ptr)
1112 {
1113 return png_ptr->chunk_name;
1114 }
1115
1116 png_const_bytep PNGAPI
1117 png_get_io_chunk_name (png_structp png_ptr)
1118 {
1119 PNG_CSTRING_FROM_CHUNK(png_ptr->io_chunk_string, png_ptr->chunk_name);
1120 return png_ptr->io_chunk_string;
1121 }
1122 #endif /* ?PNG_IO_STATE_SUPPORTED */
1123
1124 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
png_fixed_inches_from_microns
static png_fixed_point png_fixed_inches_from_microns(png_structp png_ptr, png_int_32 microns)
Definition: pngget.c:329
png_get_cHRM_XYZ
png_uint_32 PNGAPI png_get_cHRM_XYZ(png_structp png_ptr, png_const_infop info_ptr, double *red_X, double *red_Y, double *red_Z, double *green_X, double *green_Y, double *green_Z, double *blue_X, double *blue_Y, double *blue_Z)
Definition: pngget.c:554
ppi_from_ppm
static png_uint_32 ppi_from_ppm(png_uint_32 ppm)
Definition: pngget.c:278
png_xy::greenx
png_fixed_point greenx
Definition: pngpriv.h:1328
return
return
Definition: pngrutil.c:1266
png_get_x_pixels_per_inch
png_uint_32 PNGAPI png_get_x_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:316
png_xy::whitex
png_fixed_point whitex
Definition: pngpriv.h:1330
png_get_rowbytes
png_size_t PNGAPI png_get_rowbytes(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:30
profile
png_charp profile
Definition: pngrutil.c:1240
png_get_x_offset_inches_fixed
png_fixed_point PNGAPI png_get_x_offset_inches_fixed(png_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:340
PNG_INFO_gAMA
#define PNG_INFO_gAMA
Definition: png.h:809
png_XYZ::greenY
png_fixed_point greenY
Definition: pngpriv.h:1336
png_xy::redx
png_fixed_point redx
Definition: pngpriv.h:1327
PNG_INFO_tIME
#define PNG_INFO_tIME
Definition: png.h:818
PNG_INFO_sRGB
#define PNG_INFO_sRGB
Definition: png.h:820
type
GLint GLenum GLsizei GLsizei GLsizei GLint GLenum GLenum type
Definition: gl2ext.h:845
png_get_PLTE
png_uint_32 PNGAPI png_get_PLTE(png_const_structp png_ptr, png_const_infop info_ptr, png_colorp *palette, int *num_palette)
Definition: pngget.c:912
png_xy::bluey
png_fixed_point bluey
Definition: pngpriv.h:1329
png_get_y_pixels_per_inch
png_uint_32 PNGAPI png_get_y_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:322
png_get_sCAL_s
png_uint_32 PNGAPI png_get_sCAL_s(png_const_structp png_ptr, png_const_infop info_ptr, int *unit, png_charpp width, png_charpp height)
Definition: pngget.c:860
png_get_sRGB
png_uint_32 PNGAPI png_get_sRGB(png_const_structp png_ptr, png_const_infop info_ptr, int *file_srgb_intent)
Definition: pngget.c:660
png_get_y_offset_inches
float PNGAPI png_get_y_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:371
NULL
#define NULL
Definition: ftobjs.h:61
PNG_INFO_hIST
#define PNG_INFO_hIST
Definition: png.h:815
PNG_UINT_31_MAX
#define PNG_UINT_31_MAX
Definition: png.h:726
png_get_color_type
png_byte PNGAPI png_get_color_type(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:79
png_const_structp
PNG_CONST png_struct FAR * png_const_structp
Definition: png.h:848
png_get_chunk_cache_max
png_uint_32 PNGAPI png_get_chunk_cache_max(png_const_structp png_ptr)
Definition: pngget.c:1089
png_XYZ::greenX
png_fixed_point greenX
Definition: pngpriv.h:1336
png_color_16p
png_color_16 FAR * png_color_16p
Definition: png.h:569
png_XYZ
Definition: pngpriv.h:1333
png_get_x_offset_inches
float PNGAPI png_get_x_offset_inches(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:360
png_get_sPLT
png_uint_32 PNGAPI png_get_sPLT(png_const_structp png_ptr, png_const_infop info_ptr, png_sPLT_tpp spalettes)
Definition: pngget.c:704
png_charp
char FAR * png_charp
Definition: pngconf.h:536
PNG_COLOR_TYPE_PALETTE
#define PNG_COLOR_TYPE_PALETTE
Definition: png.h:746
png_get_compression_type
png_byte PNGAPI png_get_compression_type(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:106
png_fixed
png_fixed_point png_fixed(png_structp png_ptr, double fp, png_const_charp text)
Definition: png.c:1891
png_XYZ::blueZ
png_fixed_point blueZ
Definition: pngpriv.h:1337
png_get_io_chunk_name
png_const_bytep PNGAPI png_get_io_chunk_name(png_structp png_ptr)
Definition: pngget.c:1117
png_int_32
int png_int_32
Definition: pngconf.h:442
png_XYZ_from_xy_checked
int png_XYZ_from_xy_checked(png_structp png_ptr, png_XYZ *XYZ, png_xy xy)
Definition: png.c:1139
height
EGLSurface EGLint EGLint EGLint EGLint height
Definition: eglext.h:293
png_uint_32
unsigned int png_uint_32
Definition: pngconf.h:441
png_get_hIST
png_uint_32 PNGAPI png_get_hIST(png_const_structp png_ptr, png_const_infop info_ptr, png_uint_16p *hist)
Definition: pngget.c:719
png_get_pixels_per_meter
png_uint_32 PNGAPI png_get_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:149
name
EGLImageKHR EGLint * name
Definition: eglext.h:284
png_get_sCAL
png_uint_32 PNGAPI png_get_sCAL(png_const_structp png_ptr, png_const_infop info_ptr, int *unit, double *width, double *height)
Definition: pngget.c:844
png_get_text
png_uint_32 PNGAPI png_get_text(png_const_structp png_ptr, png_const_infop info_ptr, png_textp *text_ptr, int *num_text)
Definition: pngget.c:949
png_get_image_width
png_uint_32 PNGAPI png_get_image_width(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:52
png_get_gAMA
png_uint_32 PNGAPI png_get_gAMA(png_const_structp png_ptr, png_const_infop info_ptr, double *file_gamma)
Definition: pngget.c:643
png_get_y_offset_pixels
png_int_32 PNGAPI png_get_y_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:261
png_float
#define png_float(png_ptr, fixed, s)
Definition: pngpriv.h:557
if
if(!yyg->yy_init)
Definition: glslang_lex.cpp:1037
PNG_INFO_oFFs
#define PNG_INFO_oFFs
Definition: png.h:817
png_get_tIME
png_uint_32 PNGAPI png_get_tIME(png_const_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
Definition: pngget.c:975
png_get_cHRM
png_uint_32 PNGAPI png_get_cHRM(png_const_structp png_ptr, png_const_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: pngget.c:523
png_textp
png_text FAR * png_textp
Definition: png.h:652
png_XYZ::redY
png_fixed_point redY
Definition: pngpriv.h:1335
png_unknown_chunkpp
png_unknown_chunk FAR *FAR * png_unknown_chunkpp
Definition: png.h:707
png_get_pixels_per_inch
png_uint_32 PNGAPI png_get_pixels_per_inch(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:310
png_get_image_height
png_uint_32 PNGAPI png_get_image_height(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:61
png_struct_def::color_type
png_byte color_type
Definition: pngstruct.h:130
png_alloc_size_t
png_size_t png_alloc_size_t
Definition: pngconf.h:591
png_get_pCAL
png_uint_32 PNGAPI png_get_pCAL(png_const_structp png_ptr, png_const_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: pngget.c:796
params
GLenum GLvoid ** params
Definition: gl2ext.h:806
png_get_sBIT
png_uint_32 PNGAPI png_get_sBIT(png_const_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
Definition: pngget.c:931
png_bytepp
png_byte FAR *FAR * png_bytepp
Definition: pngconf.h:553
png_get_y_pixels_per_meter
png_uint_32 PNGAPI png_get_y_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:132
png_xy::bluex
png_fixed_point bluex
Definition: pngpriv.h:1329
png_get_x_offset_pixels
png_int_32 PNGAPI png_get_x_offset_pixels(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:245
png_XYZ::blueX
png_fixed_point blueX
Definition: pngpriv.h:1337
png_get_chunk_malloc_max
png_alloc_size_t PNGAPI png_get_chunk_malloc_max(png_const_structp png_ptr)
Definition: pngget.c:1096
PNGAPI
#define PNGAPI
Definition: pngconf.h:260
png_check_IHDR
void png_check_IHDR(png_structp png_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: png.c:1169
png_structp
png_struct FAR * png_structp
Definition: png.h:849
png_struct_def::palette
png_colorp palette
Definition: pngstruct.h:122
png_get_y_offset_microns
png_int_32 PNGAPI png_get_y_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:229
result
GLuint64EXT * result
Definition: glew.h:12708
PNGFAPI
#define PNGFAPI
Definition: pngpriv.h:266
png_timep
png_time FAR * png_timep
Definition: png.h:682
png_infop
png_info FAR * png_infop
Definition: png.h:721
png_xy::whitey
png_fixed_point whitey
Definition: pngpriv.h:1330
int
int
Definition: SDL_systhread.c:37
png_muldiv_warn
png_fixed_point png_muldiv_warn(png_structp png_ptr, png_fixed_point a, png_int_32 times, png_int_32 divisor)
Definition: png.c:2030
png_get_interlace_type
png_byte PNGAPI png_get_interlace_type(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:97
png_get_IHDR
png_uint_32 PNGAPI png_get_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: pngget.c:736
width
EGLSurface EGLint EGLint EGLint width
Definition: eglext.h:293
png_byte
unsigned char png_byte
Definition: pngconf.h:449
PNG_OFFSET_PIXEL
#define PNG_OFFSET_PIXEL
Definition: png.h:769
png_XYZ::redX
png_fixed_point redX
Definition: pngpriv.h:1335
png_XYZ::redZ
png_fixed_point redZ
Definition: pngpriv.h:1335
png_get_io_state
png_uint_32 PNGAPI png_get_io_state(png_structp png_ptr)
Definition: pngget.c:1105
png_get_user_width_max
png_uint_32 PNGAPI png_get_user_width_max(png_const_structp png_ptr)
Definition: pngget.c:1076
png_struct_def::num_palette
png_uint_16 num_palette
Definition: pngstruct.h:123
png_get_user_height_max
png_uint_32 PNGAPI png_get_user_height_max(png_const_structp png_ptr)
Definition: pngget.c:1082
png_uint_16p
png_uint_16 FAR * png_uint_16p
Definition: pngconf.h:532
png_const_bytep
PNG_CONST png_byte FAR * png_const_bytep
Definition: pngconf.h:527
png_debug1
#define png_debug1(l, m, p1)
Definition: pngdebug.h:152
PNG_RESOLUTION_METER
#define PNG_RESOLUTION_METER
Definition: png.h:788
png_get_sCAL_fixed
png_uint_32 PNGAPI png_get_sCAL_fixed(png_structp png_ptr, png_const_infop info_ptr, int *unit, png_fixed_point *width, png_fixed_point *height)
Definition: pngget.c:824
png_muldiv
int png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times, png_int_32 divisor)
Definition: png.c:1911
png_get_x_offset_microns
png_int_32 PNGAPI png_get_x_offset_microns(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:213
png_get_valid
png_uint_32 PNGAPI png_get_valid(png_const_structp png_ptr, png_const_infop info_ptr, png_uint_32 flag)
Definition: pngget.c:20
png_get_oFFs
png_uint_32 PNGAPI png_get_oFFs(png_const_structp png_ptr, png_const_infop info_ptr, png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
Definition: pngget.c:776
PNG_INFO_sBIT
#define PNG_INFO_sBIT
Definition: png.h:810
png_get_signature
png_const_bytep PNGAPI png_get_signature(png_const_structp png_ptr, png_infop info_ptr)
Definition: pngget.c:435
compression_type
compression_type
Definition: pngrutil.c:1309
png_const_infop
PNG_CONST png_info FAR * png_const_infop
Definition: png.h:722
PNG_INFO_PLTE
#define PNG_INFO_PLTE
Definition: png.h:812
png_bytep
png_byte FAR * png_bytep
Definition: pngconf.h:526
png_get_bit_depth
png_byte PNGAPI png_get_bit_depth(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:70
png_get_tRNS
png_uint_32 PNGAPI png_get_tRNS(png_const_structp png_ptr, png_infop info_ptr, png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
Definition: pngget.c:992
PNG_FP_1
#define PNG_FP_1
Definition: png.h:733
png_struct_def::bit_depth
png_byte bit_depth
Definition: pngstruct.h:131
pngpriv.h
png_get_gAMA_fixed
png_uint_32 PNGFAPI png_get_gAMA_fixed(png_const_structp png_ptr, png_const_infop info_ptr, png_fixed_point *file_gamma)
Definition: pngget.c:627
png_get_filter_type
png_byte PNGAPI png_get_filter_type(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:88
PNG_INFO_tRNS
#define PNG_INFO_tRNS
Definition: png.h:813
PNG_OFFSET_MICROMETER
#define PNG_OFFSET_MICROMETER
Definition: png.h:770
png_color_8p
png_color_8 FAR * png_color_8p
Definition: png.h:581
png_get_cHRM_fixed
png_uint_32 PNGAPI png_get_cHRM_fixed(png_const_structp png_ptr, png_const_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: pngget.c:592
png_struct_def::num_trans
png_uint_16 num_trans
Definition: pngstruct.h:124
png_voidp
void FAR * png_voidp
Definition: pngconf.h:524
png_fixed_point
png_int_32 png_fixed_point
Definition: pngconf.h:521
png_charpp
char FAR *FAR * png_charpp
Definition: pngconf.h:559
png_get_rows
png_bytepp PNGAPI png_get_rows(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:40
png_xy::redy
png_fixed_point redy
Definition: pngpriv.h:1327
png_size_t
size_t png_size_t
Definition: pngconf.h:454
png_XYZ::greenZ
png_fixed_point greenZ
Definition: pngpriv.h:1336
png_get_y_offset_inches_fixed
png_fixed_point PNGAPI png_get_y_offset_inches_fixed(png_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:350
png_get_cHRM_XYZ_fixed
png_uint_32 PNGFAPI png_get_cHRM_XYZ_fixed(png_structp png_ptr, png_const_infop info_ptr, png_fixed_point *int_red_X, png_fixed_point *int_red_Y, png_fixed_point *int_red_Z, png_fixed_point *int_green_X, png_fixed_point *int_green_Y, png_fixed_point *int_green_Z, png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y, png_fixed_point *int_blue_Z)
Definition: pngget.c:467
png_get_unknown_chunks
int PNGAPI png_get_unknown_chunks(png_const_structp png_ptr, png_const_infop info_ptr, png_unknown_chunkpp unknowns)
Definition: pngget.c:1037
png_xy
Definition: pngpriv.h:1325
png_get_pHYs_dpi
png_uint_32 PNGAPI png_get_pHYs_dpi(png_const_structp png_ptr, png_const_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
Definition: pngget.c:382
png_sPLT_tpp
png_sPLT_t FAR *FAR * png_sPLT_tpp
Definition: png.h:615
png_get_iCCP
png_uint_32 PNGAPI png_get_iCCP(png_const_structp png_ptr, png_const_infop info_ptr, png_charpp name, int *compression_type, png_bytepp profile, png_uint_32 *proflen)
Definition: pngget.c:678
png_get_channels
png_byte PNGAPI png_get_channels(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:426
png_get_bKGD
png_uint_32 PNGAPI png_get_bKGD(png_const_structp png_ptr, png_infop info_ptr, png_color_16p *background)
Definition: pngget.c:445
png_get_x_pixels_per_meter
png_uint_32 PNGAPI png_get_x_pixels_per_meter(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:115
png_get_user_chunk_ptr
png_voidp PNGAPI png_get_user_chunk_ptr(png_const_structp png_ptr)
Definition: pngget.c:1060
png_get_rgb_to_gray_status
png_byte PNGAPI png_get_rgb_to_gray_status(png_const_structp png_ptr)
Definition: pngget.c:1052
PNG_INFO_pHYs
#define PNG_INFO_pHYs
Definition: png.h:816
PNG_INFO_pCAL
#define PNG_INFO_pCAL
Definition: png.h:819
PNG_INFO_cHRM
#define PNG_INFO_cHRM
Definition: png.h:811
png_get_io_chunk_type
png_uint_32 PNGAPI png_get_io_chunk_type(png_const_structp png_ptr)
Definition: pngget.c:1111
png_XYZ::blueY
png_fixed_point blueY
Definition: pngpriv.h:1337
png_xy::greeny
png_fixed_point greeny
Definition: pngpriv.h:1328
units
GLfloat units
Definition: glew.h:12417
PNG_INFO_bKGD
#define PNG_INFO_bKGD
Definition: png.h:814
png_get_compression_buffer_size
png_size_t PNGAPI png_get_compression_buffer_size(png_const_structp png_ptr)
Definition: pngget.c:1067
png_get_pixel_aspect_ratio
float PNGAPI png_get_pixel_aspect_ratio(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:167
png_get_pHYs
png_uint_32 PNGAPI png_get_pHYs(png_const_structp png_ptr, png_const_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
Definition: pngget.c:878
PNG_CSTRING_FROM_CHUNK
#define PNG_CSTRING_FROM_CHUNK(s, c)
Definition: pngpriv.h:639
png_get_pixel_aspect_ratio_fixed
png_fixed_point PNGAPI png_get_pixel_aspect_ratio_fixed(png_const_structp png_ptr, png_const_infop info_ptr)
Definition: pngget.c:186
PNG_INFO_iCCP
#define PNG_INFO_iCCP
Definition: png.h:821
res
GLuint res
Definition: glew.h:10669
PNG_INFO_sCAL
#define PNG_INFO_sCAL
Definition: png.h:823
png_colorp
png_color FAR * png_colorp
Definition: png.h:557