| Current File : //usr/share/man/man3/libpng.3 |
'\" 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 <png\&.h>
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