2 /* pngget.c - retrieval of values from info struct
4 * Last changed in libpng 1.2.15 January 5, 2007
5 * For conditions of distribution and use, see copyright notice in png.h
6 * Copyright (c) 1998-2007 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.)
14 #if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
17 png_get_valid(png_structp png_ptr, png_infop info_ptr, png_uint_32 flag)
19 if (png_ptr != NULL && info_ptr != NULL)
20 return(info_ptr->valid & flag);
26 png_get_rowbytes(png_structp png_ptr, png_infop info_ptr)
28 if (png_ptr != NULL && info_ptr != NULL)
29 return(info_ptr->rowbytes);
34 #if defined(PNG_INFO_IMAGE_SUPPORTED)
36 png_get_rows(png_structp png_ptr, png_infop info_ptr)
38 if (png_ptr != NULL && info_ptr != NULL)
39 return(info_ptr->row_pointers);
45 #ifdef PNG_EASY_ACCESS_SUPPORTED
46 /* easy access to info, added in libpng-0.99 */
48 png_get_image_width(png_structp png_ptr, png_infop info_ptr)
50 if (png_ptr != NULL && info_ptr != NULL)
52 return info_ptr->width;
58 png_get_image_height(png_structp png_ptr, png_infop info_ptr)
60 if (png_ptr != NULL && info_ptr != NULL)
62 return info_ptr->height;
68 png_get_bit_depth(png_structp png_ptr, png_infop info_ptr)
70 if (png_ptr != NULL && info_ptr != NULL)
72 return info_ptr->bit_depth;
78 png_get_color_type(png_structp png_ptr, png_infop info_ptr)
80 if (png_ptr != NULL && info_ptr != NULL)
82 return info_ptr->color_type;
88 png_get_filter_type(png_structp png_ptr, png_infop info_ptr)
90 if (png_ptr != NULL && info_ptr != NULL)
92 return info_ptr->filter_type;
98 png_get_interlace_type(png_structp png_ptr, png_infop info_ptr)
100 if (png_ptr != NULL && info_ptr != NULL)
102 return info_ptr->interlace_type;
108 png_get_compression_type(png_structp png_ptr, png_infop info_ptr)
110 if (png_ptr != NULL && info_ptr != NULL)
112 return info_ptr->compression_type;
118 png_get_x_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
120 if (png_ptr != NULL && info_ptr != NULL)
121 #if defined(PNG_pHYs_SUPPORTED)
122 if (info_ptr->valid & PNG_INFO_pHYs)
124 png_debug1(1, "in %s retrieval function\n", "png_get_x_pixels_per_meter");
125 if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
127 else return (info_ptr->x_pixels_per_unit);
136 png_get_y_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
138 if (png_ptr != NULL && info_ptr != NULL)
139 #if defined(PNG_pHYs_SUPPORTED)
140 if (info_ptr->valid & PNG_INFO_pHYs)
142 png_debug1(1, "in %s retrieval function\n", "png_get_y_pixels_per_meter");
143 if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER)
145 else return (info_ptr->y_pixels_per_unit);
154 png_get_pixels_per_meter(png_structp png_ptr, png_infop info_ptr)
156 if (png_ptr != NULL && info_ptr != NULL)
157 #if defined(PNG_pHYs_SUPPORTED)
158 if (info_ptr->valid & PNG_INFO_pHYs)
160 png_debug1(1, "in %s retrieval function\n", "png_get_pixels_per_meter");
161 if(info_ptr->phys_unit_type != PNG_RESOLUTION_METER ||
162 info_ptr->x_pixels_per_unit != info_ptr->y_pixels_per_unit)
164 else return (info_ptr->x_pixels_per_unit);
172 #ifdef PNG_FLOATING_POINT_SUPPORTED
174 png_get_pixel_aspect_ratio(png_structp png_ptr, png_infop info_ptr)
176 if (png_ptr != NULL && info_ptr != NULL)
177 #if defined(PNG_pHYs_SUPPORTED)
178 if (info_ptr->valid & PNG_INFO_pHYs)
180 png_debug1(1, "in %s retrieval function\n", "png_get_aspect_ratio");
181 if (info_ptr->x_pixels_per_unit == 0)
184 return ((float)((float)info_ptr->y_pixels_per_unit
185 /(float)info_ptr->x_pixels_per_unit));
195 png_get_x_offset_microns(png_structp png_ptr, png_infop info_ptr)
197 if (png_ptr != NULL && info_ptr != NULL)
198 #if defined(PNG_oFFs_SUPPORTED)
199 if (info_ptr->valid & PNG_INFO_oFFs)
201 png_debug1(1, "in %s retrieval function\n", "png_get_x_offset_microns");
202 if(info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
204 else return (info_ptr->x_offset);
213 png_get_y_offset_microns(png_structp png_ptr, png_infop info_ptr)
215 if (png_ptr != NULL && info_ptr != NULL)
216 #if defined(PNG_oFFs_SUPPORTED)
217 if (info_ptr->valid & PNG_INFO_oFFs)
219 png_debug1(1, "in %s retrieval function\n", "png_get_y_offset_microns");
220 if(info_ptr->offset_unit_type != PNG_OFFSET_MICROMETER)
222 else return (info_ptr->y_offset);
231 png_get_x_offset_pixels(png_structp png_ptr, png_infop info_ptr)
233 if (png_ptr != NULL && info_ptr != NULL)
234 #if defined(PNG_oFFs_SUPPORTED)
235 if (info_ptr->valid & PNG_INFO_oFFs)
237 png_debug1(1, "in %s retrieval function\n", "png_get_x_offset_microns");
238 if(info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
240 else return (info_ptr->x_offset);
249 png_get_y_offset_pixels(png_structp png_ptr, png_infop info_ptr)
251 if (png_ptr != NULL && info_ptr != NULL)
252 #if defined(PNG_oFFs_SUPPORTED)
253 if (info_ptr->valid & PNG_INFO_oFFs)
255 png_debug1(1, "in %s retrieval function\n", "png_get_y_offset_microns");
256 if(info_ptr->offset_unit_type != PNG_OFFSET_PIXEL)
258 else return (info_ptr->y_offset);
266 #if defined(PNG_INCH_CONVERSIONS) && defined(PNG_FLOATING_POINT_SUPPORTED)
268 png_get_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
270 return ((png_uint_32)((float)png_get_pixels_per_meter(png_ptr, info_ptr)
275 png_get_x_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
277 return ((png_uint_32)((float)png_get_x_pixels_per_meter(png_ptr, info_ptr)
282 png_get_y_pixels_per_inch(png_structp png_ptr, png_infop info_ptr)
284 return ((png_uint_32)((float)png_get_y_pixels_per_meter(png_ptr, info_ptr)
289 png_get_x_offset_inches(png_structp png_ptr, png_infop info_ptr)
291 return ((float)png_get_x_offset_microns(png_ptr, info_ptr)
296 png_get_y_offset_inches(png_structp png_ptr, png_infop info_ptr)
298 return ((float)png_get_y_offset_microns(png_ptr, info_ptr)
302 #if defined(PNG_pHYs_SUPPORTED)
304 png_get_pHYs_dpi(png_structp png_ptr, png_infop info_ptr,
305 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
307 png_uint_32 retval = 0;
309 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
311 png_debug1(1, "in %s retrieval function\n", "pHYs");
314 *res_x = info_ptr->x_pixels_per_unit;
315 retval |= PNG_INFO_pHYs;
319 *res_y = info_ptr->y_pixels_per_unit;
320 retval |= PNG_INFO_pHYs;
322 if (unit_type != NULL)
324 *unit_type = (int)info_ptr->phys_unit_type;
325 retval |= PNG_INFO_pHYs;
328 if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
329 if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
335 #endif /* PNG_pHYs_SUPPORTED */
336 #endif /* PNG_INCH_CONVERSIONS && PNG_FLOATING_POINT_SUPPORTED */
338 /* png_get_channels really belongs in here, too, but it's been around longer */
340 #endif /* PNG_EASY_ACCESS_SUPPORTED */
343 png_get_channels(png_structp png_ptr, png_infop info_ptr)
345 if (png_ptr != NULL && info_ptr != NULL)
346 return(info_ptr->channels);
352 png_get_signature(png_structp png_ptr, png_infop info_ptr)
354 if (png_ptr != NULL && info_ptr != NULL)
355 return(info_ptr->signature);
360 #if defined(PNG_bKGD_SUPPORTED)
362 png_get_bKGD(png_structp png_ptr, png_infop info_ptr,
363 png_color_16p *background)
365 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
366 && background != NULL)
368 png_debug1(1, "in %s retrieval function\n", "bKGD");
369 *background = &(info_ptr->background);
370 return (PNG_INFO_bKGD);
376 #if defined(PNG_cHRM_SUPPORTED)
377 #ifdef PNG_FLOATING_POINT_SUPPORTED
379 png_get_cHRM(png_structp png_ptr, png_infop info_ptr,
380 double *white_x, double *white_y, double *red_x, double *red_y,
381 double *green_x, double *green_y, double *blue_x, double *blue_y)
383 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
385 png_debug1(1, "in %s retrieval function\n", "cHRM");
387 *white_x = (double)info_ptr->x_white;
389 *white_y = (double)info_ptr->y_white;
391 *red_x = (double)info_ptr->x_red;
393 *red_y = (double)info_ptr->y_red;
395 *green_x = (double)info_ptr->x_green;
397 *green_y = (double)info_ptr->y_green;
399 *blue_x = (double)info_ptr->x_blue;
401 *blue_y = (double)info_ptr->y_blue;
402 return (PNG_INFO_cHRM);
407 #ifdef PNG_FIXED_POINT_SUPPORTED
409 png_get_cHRM_fixed(png_structp png_ptr, png_infop info_ptr,
410 png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
411 png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
412 png_fixed_point *blue_x, png_fixed_point *blue_y)
414 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_cHRM))
416 png_debug1(1, "in %s retrieval function\n", "cHRM");
418 *white_x = info_ptr->int_x_white;
420 *white_y = info_ptr->int_y_white;
422 *red_x = info_ptr->int_x_red;
424 *red_y = info_ptr->int_y_red;
426 *green_x = info_ptr->int_x_green;
428 *green_y = info_ptr->int_y_green;
430 *blue_x = info_ptr->int_x_blue;
432 *blue_y = info_ptr->int_y_blue;
433 return (PNG_INFO_cHRM);
440 #if defined(PNG_gAMA_SUPPORTED)
441 #ifdef PNG_FLOATING_POINT_SUPPORTED
443 png_get_gAMA(png_structp png_ptr, png_infop info_ptr, double *file_gamma)
445 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
446 && file_gamma != NULL)
448 png_debug1(1, "in %s retrieval function\n", "gAMA");
449 *file_gamma = (double)info_ptr->gamma;
450 return (PNG_INFO_gAMA);
455 #ifdef PNG_FIXED_POINT_SUPPORTED
457 png_get_gAMA_fixed(png_structp png_ptr, png_infop info_ptr,
458 png_fixed_point *int_file_gamma)
460 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_gAMA)
461 && int_file_gamma != NULL)
463 png_debug1(1, "in %s retrieval function\n", "gAMA");
464 *int_file_gamma = info_ptr->int_gamma;
465 return (PNG_INFO_gAMA);
472 #if defined(PNG_sRGB_SUPPORTED)
474 png_get_sRGB(png_structp png_ptr, png_infop info_ptr, int *file_srgb_intent)
476 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
477 && file_srgb_intent != NULL)
479 png_debug1(1, "in %s retrieval function\n", "sRGB");
480 *file_srgb_intent = (int)info_ptr->srgb_intent;
481 return (PNG_INFO_sRGB);
487 #if defined(PNG_iCCP_SUPPORTED)
489 png_get_iCCP(png_structp png_ptr, png_infop info_ptr,
490 png_charpp name, int *compression_type,
491 png_charpp profile, png_uint_32 *proflen)
493 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
494 && name != NULL && profile != NULL && proflen != NULL)
496 png_debug1(1, "in %s retrieval function\n", "iCCP");
497 *name = info_ptr->iccp_name;
498 *profile = info_ptr->iccp_profile;
499 /* compression_type is a dummy so the API won't have to change
500 if we introduce multiple compression types later. */
501 *proflen = (int)info_ptr->iccp_proflen;
502 *compression_type = (int)info_ptr->iccp_compression;
503 return (PNG_INFO_iCCP);
509 #if defined(PNG_sPLT_SUPPORTED)
511 png_get_sPLT(png_structp png_ptr, png_infop info_ptr,
512 png_sPLT_tpp spalettes)
514 if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
516 *spalettes = info_ptr->splt_palettes;
517 return ((png_uint_32)info_ptr->splt_palettes_num);
523 #if defined(PNG_hIST_SUPPORTED)
525 png_get_hIST(png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist)
527 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
530 png_debug1(1, "in %s retrieval function\n", "hIST");
531 *hist = info_ptr->hist;
532 return (PNG_INFO_hIST);
539 png_get_IHDR(png_structp png_ptr, png_infop info_ptr,
540 png_uint_32 *width, png_uint_32 *height, int *bit_depth,
541 int *color_type, int *interlace_type, int *compression_type,
545 if (png_ptr != NULL && info_ptr != NULL && width != NULL && height != NULL &&
546 bit_depth != NULL && color_type != NULL)
548 png_debug1(1, "in %s retrieval function\n", "IHDR");
549 *width = info_ptr->width;
550 *height = info_ptr->height;
551 *bit_depth = info_ptr->bit_depth;
552 if (info_ptr->bit_depth < 1 || info_ptr->bit_depth > 16)
553 png_error(png_ptr, "Invalid bit depth");
554 *color_type = info_ptr->color_type;
555 if (info_ptr->color_type > 6)
556 png_error(png_ptr, "Invalid color type");
557 if (compression_type != NULL)
558 *compression_type = info_ptr->compression_type;
559 if (filter_type != NULL)
560 *filter_type = info_ptr->filter_type;
561 if (interlace_type != NULL)
562 *interlace_type = info_ptr->interlace_type;
564 /* check for potential overflow of rowbytes */
565 if (*width == 0 || *width > PNG_UINT_31_MAX)
566 png_error(png_ptr, "Invalid image width");
567 if (*height == 0 || *height > PNG_UINT_31_MAX)
568 png_error(png_ptr, "Invalid image height");
569 if (info_ptr->width > (PNG_UINT_32_MAX
570 >> 3) /* 8-byte RGBA pixels */
571 - 64 /* bigrowbuf hack */
572 - 1 /* filter byte */
573 - 7*8 /* rounding of width to multiple of 8 pixels */
574 - 8) /* extra max_pixel_depth pad */
577 "Width too large for libpng to process image data.");
584 #if defined(PNG_oFFs_SUPPORTED)
586 png_get_oFFs(png_structp png_ptr, png_infop info_ptr,
587 png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
589 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
590 && offset_x != NULL && offset_y != NULL && unit_type != NULL)
592 png_debug1(1, "in %s retrieval function\n", "oFFs");
593 *offset_x = info_ptr->x_offset;
594 *offset_y = info_ptr->y_offset;
595 *unit_type = (int)info_ptr->offset_unit_type;
596 return (PNG_INFO_oFFs);
602 #if defined(PNG_pCAL_SUPPORTED)
604 png_get_pCAL(png_structp png_ptr, png_infop info_ptr,
605 png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
606 png_charp *units, png_charpp *params)
608 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
609 && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
610 nparams != NULL && units != NULL && params != NULL)
612 png_debug1(1, "in %s retrieval function\n", "pCAL");
613 *purpose = info_ptr->pcal_purpose;
614 *X0 = info_ptr->pcal_X0;
615 *X1 = info_ptr->pcal_X1;
616 *type = (int)info_ptr->pcal_type;
617 *nparams = (int)info_ptr->pcal_nparams;
618 *units = info_ptr->pcal_units;
619 *params = info_ptr->pcal_params;
620 return (PNG_INFO_pCAL);
626 #if defined(PNG_sCAL_SUPPORTED)
627 #ifdef PNG_FLOATING_POINT_SUPPORTED
629 png_get_sCAL(png_structp png_ptr, png_infop info_ptr,
630 int *unit, double *width, double *height)
632 if (png_ptr != NULL && info_ptr != NULL &&
633 (info_ptr->valid & PNG_INFO_sCAL))
635 *unit = info_ptr->scal_unit;
636 *width = info_ptr->scal_pixel_width;
637 *height = info_ptr->scal_pixel_height;
638 return (PNG_INFO_sCAL);
643 #ifdef PNG_FIXED_POINT_SUPPORTED
645 png_get_sCAL_s(png_structp png_ptr, png_infop info_ptr,
646 int *unit, png_charpp width, png_charpp height)
648 if (png_ptr != NULL && info_ptr != NULL &&
649 (info_ptr->valid & PNG_INFO_sCAL))
651 *unit = info_ptr->scal_unit;
652 *width = info_ptr->scal_s_width;
653 *height = info_ptr->scal_s_height;
654 return (PNG_INFO_sCAL);
662 #if defined(PNG_pHYs_SUPPORTED)
664 png_get_pHYs(png_structp png_ptr, png_infop info_ptr,
665 png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
667 png_uint_32 retval = 0;
669 if (png_ptr != NULL && info_ptr != NULL &&
670 (info_ptr->valid & PNG_INFO_pHYs))
672 png_debug1(1, "in %s retrieval function\n", "pHYs");
675 *res_x = info_ptr->x_pixels_per_unit;
676 retval |= PNG_INFO_pHYs;
680 *res_y = info_ptr->y_pixels_per_unit;
681 retval |= PNG_INFO_pHYs;
683 if (unit_type != NULL)
685 *unit_type = (int)info_ptr->phys_unit_type;
686 retval |= PNG_INFO_pHYs;
694 png_get_PLTE(png_structp png_ptr, png_infop info_ptr, png_colorp *palette,
697 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
700 png_debug1(1, "in %s retrieval function\n", "PLTE");
701 *palette = info_ptr->palette;
702 *num_palette = info_ptr->num_palette;
703 png_debug1(3, "num_palette = %d\n", *num_palette);
704 return (PNG_INFO_PLTE);
709 #if defined(PNG_sBIT_SUPPORTED)
711 png_get_sBIT(png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit)
713 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
716 png_debug1(1, "in %s retrieval function\n", "sBIT");
717 *sig_bit = &(info_ptr->sig_bit);
718 return (PNG_INFO_sBIT);
724 #if defined(PNG_TEXT_SUPPORTED)
726 png_get_text(png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr,
729 if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
731 png_debug1(1, "in %s retrieval function\n",
732 (png_ptr->chunk_name[0] == '\0' ? "text"
733 : (png_const_charp)png_ptr->chunk_name));
734 if (text_ptr != NULL)
735 *text_ptr = info_ptr->text;
736 if (num_text != NULL)
737 *num_text = info_ptr->num_text;
738 return ((png_uint_32)info_ptr->num_text);
740 if (num_text != NULL)
746 #if defined(PNG_tIME_SUPPORTED)
748 png_get_tIME(png_structp png_ptr, png_infop info_ptr, png_timep *mod_time)
750 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
753 png_debug1(1, "in %s retrieval function\n", "tIME");
754 *mod_time = &(info_ptr->mod_time);
755 return (PNG_INFO_tIME);
761 #if defined(PNG_tRNS_SUPPORTED)
763 png_get_tRNS(png_structp png_ptr, png_infop info_ptr,
764 png_bytep *trans, int *num_trans, png_color_16p *trans_values)
766 png_uint_32 retval = 0;
767 if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
769 png_debug1(1, "in %s retrieval function\n", "tRNS");
770 if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
774 *trans = info_ptr->trans;
775 retval |= PNG_INFO_tRNS;
777 if (trans_values != NULL)
778 *trans_values = &(info_ptr->trans_values);
780 else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
782 if (trans_values != NULL)
784 *trans_values = &(info_ptr->trans_values);
785 retval |= PNG_INFO_tRNS;
790 if(num_trans != NULL)
792 *num_trans = info_ptr->num_trans;
793 retval |= PNG_INFO_tRNS;
800 #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
802 png_get_unknown_chunks(png_structp png_ptr, png_infop info_ptr,
803 png_unknown_chunkpp unknowns)
805 if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
807 *unknowns = info_ptr->unknown_chunks;
808 return ((png_uint_32)info_ptr->unknown_chunks_num);
814 #if defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
816 png_get_rgb_to_gray_status (png_structp png_ptr)
818 return (png_byte)(png_ptr? png_ptr->rgb_to_gray_status : 0);
822 #if defined(PNG_USER_CHUNKS_SUPPORTED)
824 png_get_user_chunk_ptr(png_structp png_ptr)
826 return (png_ptr? png_ptr->user_chunk_ptr : NULL);
830 #ifdef PNG_WRITE_SUPPORTED
832 png_get_compression_buffer_size(png_structp png_ptr)
834 return (png_uint_32)(png_ptr? png_ptr->zbuf_size : 0L);
838 #ifdef PNG_ASSEMBLER_CODE_SUPPORTED
840 /* this function was added to libpng 1.2.0 and should exist by default */
842 png_get_asm_flags (png_structp png_ptr)
844 /* obsolete, to be removed from libpng-1.4.0 */
845 return (png_ptr? 0L: 0L);
848 /* this function was added to libpng 1.2.0 and should exist by default */
850 png_get_asm_flagmask (int flag_select)
852 /* obsolete, to be removed from libpng-1.4.0 */
853 flag_select=flag_select;
857 /* GRR: could add this: && defined(PNG_MMX_CODE_SUPPORTED) */
858 /* this function was added to libpng 1.2.0 */
860 png_get_mmx_flagmask (int flag_select, int *compilerID)
862 /* obsolete, to be removed from libpng-1.4.0 */
863 flag_select=flag_select;
864 *compilerID = -1; /* unknown (i.e., no asm/MMX code compiled) */
868 /* this function was added to libpng 1.2.0 */
870 png_get_mmx_bitdepth_threshold (png_structp png_ptr)
872 /* obsolete, to be removed from libpng-1.4.0 */
873 return (png_ptr? 0: 0);
876 /* this function was added to libpng 1.2.0 */
878 png_get_mmx_rowbytes_threshold (png_structp png_ptr)
880 /* obsolete, to be removed from libpng-1.4.0 */
881 return (png_ptr? 0L: 0L);
883 #endif /* ?PNG_1_0_X */
884 #endif /* ?PNG_ASSEMBLER_CODE_SUPPORTED */
886 #ifdef PNG_SET_USER_LIMITS_SUPPORTED
887 /* these functions were added to libpng 1.2.6 */
889 png_get_user_width_max (png_structp png_ptr)
891 return (png_ptr? png_ptr->user_width_max : 0);
894 png_get_user_height_max (png_structp png_ptr)
896 return (png_ptr? png_ptr->user_height_max : 0);
898 #endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
901 #endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */