'\" te .TH libpng 3 "06 Apr 2004" "SunOS 5.11" "C Library Functions" .SH "NAME" libpng \- Portable Network Graphics (PNG) Reference Library .SH "SYNOPSIS" .sp .nf \f(CW#include cc [ flag \&.\&.\&.] -I/usr/sfw/include file [ library \&.\&.\&. ] - L/usr/sfw/lib -R/usr/sfw/lib -lpng png_uint_32 png_access_version_number (void); int png_check_sig (png_bytep sig, int num); void png_chunk_error (png_structp png_ptr, png_const_charp error); void png_chunk_warning (png_structp png_ptr, png_const_charp message); void png_convert_from_struct_tm (png_timep ptime, struct tm FAR * ttime); void png_convert_from_time_t (png_timep ptime, time_t ttime); png_charp png_convert_to_rfc1124 (png_structp png_ptr, png_timep ptime); png_infop png_create_info_struct (png_structp png_ptr); png_structp png_create_read_struct (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn); png_structp png_create_read_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn); png_structp png_create_write_struct (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn); png_structp png_create_write_struct_2(png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn); int png_debug(int level, png_const_charp message); int png_debug1(int level, png_const_charp message, p1); int png_debug2(int level, png_const_charp message, p1, p2); void png_destroy_info_struct (png_structp png_ptr, png_infopp info_ptr_ptr); void png_destroy_read_struct (png_structpp png_ptr_ptr, png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr); void png_destroy_write_struct (png_structpp png_ptr_ptr, png_infopp info_ptr_ptr); void png_error (png_structp png_ptr, png_const_charp error); void png_free (png_structp png_ptr, png_voidp ptr); void png_free_chunk_list (png_structp png_ptr); void png_free_default(png_structp png_ptr, png_voidp ptr); void png_free_data (png_structp png_ptr, png_infop info_ptr, int num); png_byte png_get_bit_depth (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_bKGD (png_structp png_ptr, png_infop info_ptr, png_color_16p *background); png_byte png_get_channels (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_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); png_uint_32 png_get_cHRM_fixed (png_structp png_ptr, png_infop info_ptr, png_uint_32 *white_x, png_uint_32 *white_y, png_uint_32 *red_x, png_uint_32 *red_y, png_uint_32 *green_x, png_uint_32 *green_y, png_uint_32 *blue_x, png_uint_32 *blue_y); png_byte png_get_color_type (png_structp png_ptr, png_infop info_ptr); png_byte png_get_compression_type (png_structp png_ptr, png_infop info_ptr); png_byte png_get_copyright (png_structp png_ptr); png_voidp png_get_error_ptr (png_structp png_ptr); png_byte png_get_filter_type (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_gAMA (png_structp png_ptr, png_infop info_ptr, double *file_gamma); png_uint_32 png_get_gAMA_fixed (png_structp png_ptr, png_infop info_ptr, png_uint_32 *int_file_gamma); png_byte png_get_header_ver (png_structp png_ptr); png_byte png_get_header_version (png_structp png_ptr); png_uint_32 png_get_hIST (png_structp png_ptr, png_infop info_ptr, png_uint_16p *hist); png_uint_32 png_get_iCCP (png_structp png_ptr, png_infop info_ptr, png_charpp name, int *compression_type, png_charpp profile, png_uint_32 *proflen); png_uint_32 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); png_uint_32 png_get_image_height (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_image_width (png_structp png_ptr, png_infop info_ptr); png_byte png_get_interlace_type (png_structp png_ptr, png_infop info_ptr); png_voidp png_get_io_ptr (png_structp png_ptr); png_byte png_get_libpng_ver (png_structp png_ptr); png_voidp png_get_mem_ptr(png_structp png_ptr); png_uint_32 png_get_oFFs (png_structp png_ptr, png_infop info_ptr, png_uint_32 *offset_x, png_uint_32 *offset_y, int *unit_type); png_uint_32 png_get_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); png_uint_32 png_get_pHYs (png_structp png_ptr, png_infop info_ptr, png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type); float png_get_pixel_aspect_ratio (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_pixels_per_meter (png_structp png_ptr, png_infop info_ptr); png_voidp png_get_progressive_ptr (png_structp png_ptr); png_uint_32 png_get_PLTE (png_structp png_ptr, png_infop info_ptr, png_colorp *palette, int *num_palette); png_byte png_get_rgb_to_gray_status (png_structp png_ptr) png_uint_32 png_get_rowbytes (png_structp png_ptr, png_infop info_ptr); png_bytepp png_get_rows (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_sBIT (png_structp png_ptr, png_infop info_ptr, png_color_8p *sig_bit); png_bytep png_get_signature (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_sPLT (png_structp png_ptr, png_infop info_ptr, png_spalette_p *splt_ptr); png_uint_32 png_get_sRGB (png_structp png_ptr, png_infop info_ptr, int *intent); png_uint_32 png_get_text (png_structp png_ptr, png_infop info_ptr, png_textp *text_ptr, int *num_text); png_uint_32 png_get_tIME (png_structp png_ptr, png_infop info_ptr, png_timep *mod_time); png_uint_32 png_get_tRNS (png_structp png_ptr, png_infop info_ptr, png_bytep *trans, int *num_trans, png_color_16p *trans_values); png_uint_32 png_get_unknown_chunks (png_structp png_ptr, png_infop info_ptr, png_unknown_chunkpp unknowns); png_voidp png_get_user_chunk_ptr (png_structp png_ptr); png_voidp png_get_user_transform_ptr (png_structp png_ptr); png_uint_32 png_get_valid (png_structp png_ptr, png_infop info_ptr, png_uint_32 flag); png_int_32 png_get_x_offset_microns (png_structp png_ptr, png_infop info_ptr); png_int_32 png_get_x_offset_pixels (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_x_pixels_per_meter (png_structp png_ptr, png_infop info_ptr); png_int_32 png_get_y_offset_microns (png_structp png_ptr, png_infop info_ptr); png_int_32 png_get_y_offset_pixels (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_y_pixels_per_meter (png_structp png_ptr, png_infop info_ptr); png_uint_32 png_get_compression_buffer_size (png_structp png_ptr); void png_info_init (png_infop info_ptr); void png_init_io (png_structp png_ptr, FILE *fp); png_voidp png_malloc (png_structp png_ptr, png_uint_32 size); png_voidp png_malloc_default(png_structp png_ptr, png_uint_32 size); voidp png_memcpy (png_voidp s1, png_voidp s2, png_size_t size); png_voidp png_memcpy_check (png_structp png_ptr, png_voidp s1, png_voidp s2, png_uint_32 size); voidp png_memset (png_voidp s1, int value, png_size_t size); png_voidp png_memset_check (png_structp png_ptr, png_voidp s1, int value, png_uint_32 size); void png_permit_empty_plte (png_structp png_ptr, int empty_plte_permitted); void png_process_data (png_structp png_ptr, png_infop info_ptr, png_bytep buffer, png_size_t buffer_size); void png_progressive_combine_row (png_structp png_ptr, png_bytep old_row, png_bytep new_row); void png_read_destroy (png_structp png_ptr, png_infop info_ptr, png_infop end_info_ptr); void png_read_end (png_structp png_ptr, png_infop info_ptr); void png_read_image (png_structp png_ptr, png_bytepp image); DEPRECATED: void png_read_init (png_structp png_ptr); DEPRECATED: void png_read_init_2 (png_structp png_ptr, png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t png_info_size); void png_read_info (png_structp png_ptr, png_infop info_ptr); void png_read_png (png_structp png_ptr, png_infop info_ptr, int transforms, png_voidp params); void png_read_row (png_structp png_ptr, png_bytep row, png_bytep display_row); void png_read_rows (png_structp png_ptr, png_bytepp row, png_bytepp display_row, png_uint_32 num_rows); void png_read_update_info (png_structp png_ptr, png_infop info_ptr); void png_set_background (png_structp png_ptr, png_color_16p background_color, int background_gamma_code, int need_expand, double background_gamma); void png_set_bgr (png_structp png_ptr); void png_set_bKGD (png_structp png_ptr, png_infop info_ptr, png_color_16p background); void 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); void png_set_cHRM_fixed (png_structp png_ptr, png_infop info_ptr, png_uint_32 white_x, png_uint_32 white_y, png_uint_32 red_x, png_uint_32 red_y, png_uint_32 green_x, png_uint_32 green_y, png_uint_32 blue_x, png_uint_32 blue_y); void png_set_compression_level (png_structp png_ptr, int level); void png_set_compression_mem_level (png_structp png_ptr, int mem_level); void png_set_compression_method (png_structp png_ptr, int method); void png_set_compression_strategy (png_structp png_ptr, int strategy); void png_set_compression_window_bits (png_structp png_ptr, int window_bits); void png_set_crc_action (png_structp png_ptr, int crit_action, int ancil_action); void png_set_dither (png_structp png_ptr, png_colorp palette, int num_palette, int maximum_colors, png_uint_16p histogram, int full_dither); void png_set_error_fn (png_structp png_ptr, png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn); void png_set_expand (png_structp png_ptr); void png_set_filler (png_structp png_ptr, png_uint_32 filler, int flags); void png_set_filter (png_structp png_ptr, int method, int filters); void png_set_filter_heuristics (png_structp png_ptr, int heuristic_method, int num_weights, png_doublep filter_weights, png_doublep filter_costs); void png_set_flush (png_structp png_ptr, int nrows); void png_set_gamma (png_structp png_ptr, double screen_gamma, double default_file_gamma); void png_set_gAMA (png_structp png_ptr, png_infop info_ptr, double file_gamma); void png_set_gAMA_fixed (png_structp png_ptr, png_infop info_ptr, png_uint_32 file_gamma); void png_set_gray_1_2_4_to_8(png_structp png_ptr); void png_set_gray_to_rgb (png_structp png_ptr); void png_set_hIST (png_structp png_ptr, png_infop info_ptr, png_uint_16p hist); void png_set_iCCP (png_structp png_ptr, png_infop info_ptr, png_charp name, int compression_type, png_charp profile, png_uint_32 proflen); int png_set_interlace_handling (png_structp png_ptr); void png_set_invalid (png_structp png_ptr, png_infop info_ptr, int mask); void png_set_invert_alpha (png_structp png_ptr); void png_set_invert_mono (png_structp png_ptr); void 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); void png_set_keep_unknown_chunks (png_structp png_ptr, int keep, png_bytep chunk_list, int num_chunks); void png_set_mem_fn(png_structp png_ptr, png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn); void png_set_oFFs (png_structp png_ptr, png_infop info_ptr, png_uint_32 offset_x, png_uint_32 offset_y, int unit_type); void png_set_packing (png_structp png_ptr); void png_set_packswap (png_structp png_ptr); void png_set_palette_to_rgb(png_structp png_ptr); void 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); void png_set_pHYs (png_structp png_ptr, png_infop info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type); void png_set_progressive_read_fn (png_structp png_ptr, png_voidp progressive_ptr, png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn); void png_set_PLTE (png_structp png_ptr, png_infop info_ptr, png_colorp palette, int num_palette); void png_set_read_fn (png_structp png_ptr, png_voidp io_ptr, png_rw_ptr read_data_fn); void png_set_read_status_fn (png_structp png_ptr, png_read_status_ptr read_row_fn); void png_set_read_user_transform_fn (png_structp png_ptr, png_user_transform_ptr read_user_transform_fn); void png_set_rgb_to_gray (png_structp png_ptr, int error_action, double red, double green); void png_set_rgb_to_gray_fixed (png_structp png_ptr, int error_action png_fixed_point red, png_fixed_point green); void png_set_rows (png_structp png_ptr, png_infop info_ptr, png_bytepp row_pointers); void png_set_sBIT (png_structp png_ptr, png_infop info_ptr, png_color_8p sig_bit); void png_set_sCAL (png_structp png_ptr, png_infop info_ptr, png_charp unit, double width, double height); void png_set_shift (png_structp png_ptr, png_color_8p true_bits); void png_set_sig_bytes (png_structp png_ptr, int num_bytes); void png_set_sPLT (png_structp png_ptr, png_infop info_ptr, png_spalette_p splt_ptr, int num_spalettes); void png_set_sRGB (png_structp png_ptr, png_infop info_ptr, int intent); void png_set_sRGB_gAMA_and_cHRM (png_structp png_ptr, png_infop info_ptr, int intent); void png_set_strip_16 (png_structp png_ptr); void png_set_strip_alpha (png_structp png_ptr); void png_set_swap (png_structp png_ptr); void png_set_swap_alpha (png_structp png_ptr); void png_set_text (png_structp png_ptr, png_infop info_ptr, png_textp text_ptr, int num_text); void png_set_tIME (png_structp png_ptr, png_infop info_ptr, png_timep mod_time); void png_set_tRNS (png_structp png_ptr, png_infop info_ptr, png_bytep trans, int num_trans, png_color_16p trans_values); void png_set_tRNS_to_alpha(png_structp png_ptr); png_uint_32 png_set_unknown_chunks (png_structp png_ptr, png_infop info_ptr, png_unknown_chunkp unknowns, int num, int location); void png_set_unknown_chunk_location(png_structp png_ptr, png_infop info_ptr, int chunk, int location); void png_set_read_user_chunk_fn (png_structp png_ptr, png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn); void png_set_user_transform_info (png_structp png_ptr, png_voidp user_transform_ptr, int user_transform_depth, int user_transform_channels); void png_set_write_fn (png_structp png_ptr, png_voidp io_ptr, png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn); void png_set_write_status_fn (png_structp png_ptr, png_write_status_ptr write_row_fn); void png_set_write_user_transform_fn (png_structp png_ptr, png_user_transform_ptr write_user_transform_fn); void png_set_compression_buffer_size(png_structp png_ptr, png_uint_32 size); int png_sig_cmp (png_bytep sig, png_size_t start, png_size_t num_to_check); void png_start_read_image (png_structp png_ptr); void png_warning (png_structp png_ptr, png_const_charp mes- sage); void png_write_chunk (png_structp png_ptr, png_bytep chunk_name, png_bytep data, png_size_t length); void png_write_chunk_data (png_structp png_ptr, png_bytep data, png_size_t length); void png_write_chunk_end (png_structp png_ptr); void png_write_chunk_start (png_structp png_ptr, png_bytep chunk_name, png_uint_32 length); void png_write_destroy (png_structp png_ptr); void png_write_destroy_info (png_infop info_ptr); void png_write_end (png_structp png_ptr, png_infop info_ptr); void png_write_flush (png_structp png_ptr); void png_write_image (png_structp png_ptr, png_bytepp image); DEPRECATED: void png_write_init (png_structp png_ptr); DEPRECATED: void png_write_init_2 (png_structp png_ptr, png_const_charp user_png_ver, png_size_t png_struct_size, png_size_t png_info_size); void png_write_info (png_structp png_ptr, png_infop info_ptr); void png_write_info_before_PLTE (png_structp png_ptr, png_infop info_ptr); void png_write_png (png_structp png_ptr, png_infop info_ptr, int transforms, png_voidp params); void png_write_row (png_structp png_ptr, png_bytep row); void png_write_rows (png_structp png_ptr, png_bytepp row, png_uint_32 num_rows);\fR .fi .sp .SH "DESCRIPTION" .PP The \fBlibpng\fR library supports encoding, decoding, and various manipulations of the Portable Network Graphics (PNG) format image files\&. The \fBlibpng\fR library uses the \fBzlib(3)\fR compression library\&. .PP For more information about libpng V1\&.0\&.15, see \fBhttp://www\&.libpng\&.org/pub/png/libpng-1\&.0\&.15-manual\&.txt\fR .PP For more information about libpng V1\&.2\&.5, see \fBhttp://www\&.libpng\&.org/pub/png/libpng-manual\&.txt\fR .SH "EXTENDED DESCRIPTION" .SS "Version Numbers" .PP Due to various miscommunications, unforeseen code incompatibilities and occasional factors outside the authors\&' control, version numbering on the library has not always been consistent and straightforward\&. The following table summarizes matters since version 0\&.89c, which was the first widely used release\&. .sp .TS tab() allbox; lw(1.375000i)| lw(1.375000i)| lw(1.375000i)| lw(1.375000i). source versionpng\&.h stringpng\&.h intshared-lib version 0\&.89c ("beta 3")0\&.89891\&.0\&.89 0\&.90 ("beta 4")0\&.90900\&.90 0\&.95 ("beta 5")0\&.95950\&.95 0\&.96 ("beta 6")0\&.96960\&.96 0\&.97b ("beta 7")1\&.00\&.97971\&.0\&.1 0\&.97c0\&.97971\&.0\&.1 0\&.980\&.98982\&.0\&.98 0\&.990\&.99982\&.0\&.99 0\&.99a-m0\&.99992\&.0\&.99 1\&.001\&.001002\&.1\&.0 1\&.0\&.01\&.0\&.01002\&.1\&.0 1\&.0\&.0*1002\&.1\&.0 1\&.0\&.1100012\&.1\&.0 1\&.0\&.1a-e10002# 1\&.0\&.210002 1\&.0\&.2a-b10003 1\&.0\&.110001 1\&.0\&.1a-e100022\&.1\&.0\&.1a-e 1\&.0\&.2100022\&.1\&.0\&.2 1\&.0\&.2a-b100032\&.1\&.0\&.2a-b 1\&.0100032\&.1\&.0 1\&.0a-d100042\&.1\&.0a-d 1\&.0\&.4100042\&.1\&.0\&.4 1\&.0\&.4a-f100052\&.1\&.0\&.4a-f 1\&.0\&.5 (+ 2 patches)100052\&.1\&.0\&.5 1\&.0\&.5a-d100062\&.1\&.0\&.5a-d 1\&.0\&.5e-r101002\&.1\&.0\&.5e-r 1\&.0\&.5s-v100062\&.1\&.0\&.5s-v 1\&.0\&.6 (+ 3 patches)100062\&.1\&.0\&.6 1\&.0\&.6d-g100072\&.1\&.0\&.6d-g 1\&.0\&.6h1000710\&.6h 1\&.0\&.6i1000710\&.6i 1\&.0\&.6j100072\&.1\&.0\&.6j 1\&.0\&.7beta11-14DLLNUM100072\&.1\&.0\&.7beta11-14 1\&.0\&.7beta15-181100072\&.1\&.0\&.7beta15-18 1\&.0\&.7rc1-21100072\&.1\&.0\&.7rc1-2 1\&.0\&.71100072\&.1\&.0\&.7 1\&.0\&.8beta1-41100082\&.1\&.0\&.8beta1-4 1\&.0\&.8rc11100082\&.1\&.0\&.8rc1 1\&.0\&.81100082\&.1\&.0\&.8 1\&.0\&.9beta1-61100092\&.1\&.0\&.9beta1-6 1\&.0\&.9rc11100092\&.1\&.0\&.9rc1 1\&.0\&.9beta7-101100092\&.1\&.0\&.9beta7-10 1\&.0\&.9rc21100092\&.1\&.0\&.9rc2 1\&.0\&.91100092\&.1\&.0\&.9 1\&.0\&.10beta11100102\&.1\&.0\&.10beta1 1\&.0\&.10rc11100102\&.1\&.0\&.10rc1 1\&.0\&.101100102\&.1\&.0\&.10 1\&.0\&.11beta1-31100112\&.1\&.0\&.11beta1-3 1\&.0\&.11rc11100112\&.1\&.0\&.11rc1 1\&.0\&.111100112\&.1\&.0\&.11 1\&.0\&.12beta1-21100122\&.1\&.0\&.12beta1-2 .TE .sp .sp .ne 2 .mk \fB*\fR .in +24n .rt From this release forward, the \fBpng\&.h\fR string is identical to the source version\&. .sp .sp 1 .in -24n .sp .ne 2 .mk \fB#\fR .in +24n .rt From this release forward, the shared library is 2\&.\fIV\fR, where \fIV\fR is the source code version except as noted\&. .sp .sp 1 .in -24n .PP Henceforth, the source version will match the shared-library minor and patch numbers\&. The shared-library major version number will be used for changes in backward compatibility, as it is intended\&. The PNG_PNGLIB_VER macro, which is not used within \fBlibpng\fR but is available for applications, is an unsigned integer of the form \fIxyyzz\fR corresponding to the source version \fIx\&.y\&.z\fR (leading zeros in \fIy\fR and \fIz\fR)\&. Beta versions were given the previous public release number plus a letter, until version 1\&.0\&.6j\&. From then on, they were given the upcoming public release number plus "betaNN" or "rcN"\&. .SH "ATTRIBUTES" .PP See \fBattributes\fR(5) for descriptions of the following attributes: .sp .TS tab() allbox; cw(2.750000i)| cw(2.750000i) lw(2.750000i)| lw(2.750000i). ATTRIBUTE TYPEATTRIBUTE VALUE Availabilityimage/library/libpng Interface stabilityUncommitted .TE .sp .SH "SEE ALSO" .PP \fBlibpngpf\fR(3), \fBpng\fR(4), \fBattributes\fR(5) .sp .ne 2 .mk \fB\fBlibpng\fR\fR .sp .6 .in +4 .sp .nf \f(CW\fBftp://ftp\&.uu\&.net/graphics/png\fR \fBhttp://www\&.libpng\&.org/pub/png\fR\fR .fi .sp .sp .sp 1 .in -4 .sp .ne 2 .mk \fB\fBzlib\fR\fR .sp .6 .in +4 Generally at the same location as \fBlibpng\fR or at .sp .nf \f(CW\fBftp://ftp\&.uu\&.net/pub/archiving/zip/zlib\fR \fBftp://ftp\&.info-zip\&.org/pub/infozip/zlib\fR\fR .fi .sp .sp .sp 1 .in -4 .sp .ne 2 .mk \fBPNGspecification:RFC2083\fR .sp .6 .in +4 Generally at the same location as \fBlibpng\fR or at \fBftp://ds\&.internic\&.net/rfc/rfc2083\&.txt\fR .sp or as a W3C Recommendation at \fBhttp://www\&.w3\&.org/TR/REC-png\&.html\fR .sp .sp 1 .in -4 .PP In the case of any inconsistency between the PNG specification and this library, the specification takes precedence\&. .SH "NOTES" .PP This man page was originally written by Glenn Randers-Pehrson\&. Updated by Breda McColgan, Sun Microsystems Inc\&., 2004\&. ...\" created by instant / solbook-to-man, Thu 20 Mar 2014, 02:30 ...\" LSARC 2003/085 libtiff, libjpeg, and libpng