png.c File Reference

#include "png.h"

Go to the source code of this file.

Macros
#define	PNG_INTERNAL
#define	PNG_NO_EXTERN
#define	PNG_NO_PEDANTIC_WARNINGS

Typedefs
typedef version_1_2_56	Your_png_h_is_not_version_1_2_56

Functions
void PNGAPI	png_set_sig_bytes (png_structp png_ptr, int num_bytes)
int PNGAPI	png_sig_cmp (png_bytep sig, png_size_t start, png_size_t num_to_check)
int PNGAPI	png_check_sig (png_bytep sig, int num)
voidpf	png_zalloc (voidpf png_ptr, uInt items, uInt size)
void	png_zfree (voidpf png_ptr, voidpf ptr)
void	png_reset_crc (png_structp png_ptr)
void	png_calculate_crc (png_structp png_ptr, png_bytep ptr, png_size_t length)
png_infop PNGAPI	png_create_info_struct (png_structp png_ptr)
void PNGAPI	png_destroy_info_struct (png_structp png_ptr, png_infopp info_ptr_ptr)
void PNGAPI	png_info_init (png_infop info_ptr)
void PNGAPI	png_info_init_3 (png_infopp ptr_ptr, png_size_t png_info_struct_size)
void PNGAPI	png_data_freer (png_structp png_ptr, png_infop info_ptr, int freer, png_uint_32 mask)
void PNGAPI	png_free_data (png_structp png_ptr, png_infop info_ptr, png_uint_32 mask, int num)
void	png_info_destroy (png_structp png_ptr, png_infop info_ptr)
png_voidp PNGAPI	png_get_io_ptr (png_structp png_ptr)
void PNGAPI	png_init_io (png_structp png_ptr, png_FILE_p fp)
png_charp PNGAPI	png_convert_to_rfc1123 (png_structp png_ptr, png_timep ptime)
png_charp PNGAPI	png_get_copyright (png_structp png_ptr)
png_charp PNGAPI	png_get_libpng_ver (png_structp png_ptr)
png_charp PNGAPI	png_get_header_ver (png_structp png_ptr)
png_charp PNGAPI	png_get_header_version (png_structp png_ptr)
int PNGAPI	png_handle_as_unknown (png_structp png_ptr, png_bytep chunk_name)
int PNGAPI	png_reset_zstream (png_structp png_ptr)
png_uint_32 PNGAPI	png_access_version_number (void)
int PNGAPI	png_mmx_support (void)
void	png_64bit_product (long v1, long v2, unsigned long *hi_product, unsigned long *lo_product)
int	png_check_cHRM_fixed (png_structp png_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)
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)

Variables
PNG_CONST char	png_libpng_ver [18] = PNG_LIBPNG_VER_STRING
PNG_CONST png_byte FARDATA	png_sig [8] = {137, 80, 78, 71, 13, 10, 26, 10}
	PNG_IHDR
	PNG_IDAT
	PNG_IEND
	PNG_PLTE
	PNG_bKGD
	PNG_cHRM
	PNG_gAMA
	PNG_hIST
	PNG_iCCP
	PNG_iTXt
	PNG_oFFs
	PNG_pCAL
	PNG_sCAL
	PNG_pHYs
	PNG_sBIT
	PNG_sPLT
	PNG_sRGB
	PNG_tEXt
	PNG_tIME
	PNG_tRNS
	PNG_zTXt
PNG_CONST int FARDATA	png_pass_start [] = {0, 4, 0, 2, 0, 1, 0}
PNG_CONST int FARDATA	png_pass_inc [] = {8, 8, 4, 4, 2, 2, 1}
PNG_CONST int FARDATA	png_pass_ystart [] = {0, 0, 4, 0, 2, 0, 1}
PNG_CONST int FARDATA	png_pass_yinc [] = {8, 8, 8, 4, 4, 2, 2}
PNG_CONST int FARDATA	png_pass_mask []
PNG_CONST int FARDATA	png_pass_dsp_mask [] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff}

Macro Definition Documentation

PNG_INTERNAL

#define PNG_INTERNAL

Definition at line 14 of file png.c.

PNG_NO_EXTERN

#define PNG_NO_EXTERN

Definition at line 15 of file png.c.

PNG_NO_PEDANTIC_WARNINGS

#define PNG_NO_PEDANTIC_WARNINGS

Definition at line 16 of file png.c.

Typedef Documentation

Your_png_h_is_not_version_1_2_56

typedef version_1_2_56 Your_png_h_is_not_version_1_2_56

Definition at line 20 of file png.c.

Function Documentation

png_64bit_product()

void png_64bit_product	(	long	v1,
		long	v2,
		unsigned long *	hi_product,
		unsigned long *	lo_product
	)

Definition at line 871 of file png.c.

References long().

png_access_version_number()

png_uint_32 PNGAPI png_access_version_number

(

void

)

Definition at line 819 of file png.c.

References PNG_LIBPNG_VER, and PNGAPI.

Referenced by main().

png_calculate_crc()

void png_calculate_crc	(	png_structp	png_ptr,
		png_bytep	ptr,
		png_size_t	length
	)

Definition at line 226 of file png.c.

png_check_cHRM_fixed()

int png_check_cHRM_fixed	(	png_structp	png_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 at line 896 of file png.c.

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 at line 968 of file png.c.

png_check_sig()

int PNGAPI png_check_sig	(	png_bytep	sig,
		int	num
	)

Definition at line 144 of file png.c.

References png_sig_cmp(), and PNGAPI.

Referenced by vl::isPNG().

png_convert_to_rfc1123()

png_charp PNGAPI png_convert_to_rfc1123	(	png_structp	png_ptr,
		png_timep	ptime
	)

Definition at line 676 of file png.c.

png_create_info_struct()

png_infop PNGAPI png_create_info_struct

(

png_structp

png_ptr

)

Definition at line 253 of file png.c.

Referenced by vl::savePNG().

png_data_freer()

void PNGAPI png_data_freer	(	png_structp	png_ptr,
		png_infop	info_ptr,
		int	freer,
		png_uint_32	mask
	)

Definition at line 345 of file png.c.

png_destroy_info_struct()

void PNGAPI png_destroy_info_struct	(	png_structp	png_ptr,
		png_infopp	info_ptr_ptr
	)

Definition at line 280 of file png.c.

png_free_data()

void PNGAPI png_free_data	(	png_structp	png_ptr,
		png_infop	info_ptr,
		png_uint_32	mask,
		int	num
	)

Definition at line 364 of file png.c.

png_get_copyright()

png_charp PNGAPI png_get_copyright

(

png_structp

png_ptr

)

Definition at line 726 of file png.c.

Referenced by main().

png_get_header_ver()

png_charp PNGAPI png_get_header_ver

(

png_structp

png_ptr

)

Definition at line 766 of file png.c.

png_get_header_version()

png_charp PNGAPI png_get_header_version

(

png_structp

png_ptr

)

Definition at line 774 of file png.c.

Referenced by main().

png_get_io_ptr()

png_voidp PNGAPI png_get_io_ptr

(

png_structp

png_ptr

)

Definition at line 644 of file png.c.

png_get_libpng_ver()

png_charp PNGAPI png_get_libpng_ver

(

png_structp

png_ptr

)

Definition at line 758 of file png.c.

png_handle_as_unknown()

int PNGAPI png_handle_as_unknown	(	png_structp	png_ptr,
		png_bytep	chunk_name
	)

Definition at line 792 of file png.c.

png_info_destroy()

void png_info_destroy	(	png_structp	png_ptr,
		png_infop	info_ptr
	)

Definition at line 620 of file png.c.

png_info_init()

void PNGAPI png_info_init

(

png_infop

info_ptr

)

Definition at line 313 of file png.c.

References png_info_init_3(), and PNGAPI.

png_info_init_3()

void PNGAPI png_info_init_3	(	png_infopp	ptr_ptr,
		png_size_t	png_info_struct_size
	)

Definition at line 321 of file png.c.

References info_ptr, NULL, png_create_struct(), png_debug, png_destroy_struct(), png_memset, png_sizeof, and PNGAPI.

Referenced by png_info_init().

png_init_io()

void PNGAPI png_init_io	(	png_structp	png_ptr,
		png_FILE_p	fp
	)

Definition at line 660 of file png.c.

png_mmx_support()

int PNGAPI png_mmx_support

(

void

)

Definition at line 830 of file png.c.

References PNG_ABORT, PNGAPI, and PNGARG.

Referenced by readpng2_version_info().

png_reset_crc()

void png_reset_crc

(

png_structp

png_ptr

)

Definition at line 215 of file png.c.

png_reset_zstream()

int PNGAPI png_reset_zstream

(

png_structp

png_ptr

)

Definition at line 809 of file png.c.

png_set_sig_bytes()

void PNGAPI png_set_sig_bytes	(	png_structp	png_ptr,
		int	num_bytes
	)

Definition at line 99 of file png.c.

png_sig_cmp()

int PNGAPI png_sig_cmp	(	png_bytep	sig,
		png_size_t	start,
		png_size_t	num_to_check
	)

Definition at line 121 of file png.c.

References png_memcmp, and PNGAPI.

Referenced by png_check_sig(), PngLoadImage(), readpng2_check_sig(), and readpng_init().

png_zalloc()

voidpf png_zalloc	(	voidpf	png_ptr,
		uInt	items,
		uInt	size
	)

Definition at line 158 of file png.c.

png_zfree()

void png_zfree	(	voidpf	png_ptr,
		voidpf	ptr
	)

Definition at line 206 of file png.c.

Variable Documentation

PNG_bKGD

PNG_bKGD

Definition at line 42 of file png.c.

PNG_cHRM

PNG_cHRM

Definition at line 43 of file png.c.

PNG_gAMA

PNG_gAMA

Definition at line 44 of file png.c.

PNG_hIST

PNG_hIST

Definition at line 45 of file png.c.

PNG_iCCP

PNG_iCCP

Definition at line 46 of file png.c.

PNG_IDAT

PNG_IDAT

Definition at line 39 of file png.c.

PNG_IEND

PNG_IEND

Definition at line 40 of file png.c.

PNG_IHDR

PNG_IHDR

Definition at line 38 of file png.c.

PNG_iTXt

PNG_iTXt

Definition at line 47 of file png.c.

png_libpng_ver

PNG_CONST char png_libpng_ver[18] = PNG_LIBPNG_VER_STRING

Definition at line 28 of file png.c.

Referenced by main(), readpng2_version_info(), readpng_version_info(), and writepng_version_info().

PNG_oFFs

PNG_oFFs

Definition at line 48 of file png.c.

png_pass_dsp_mask

PNG_CONST int FARDATA png_pass_dsp_mask[] = {0xff, 0x0f, 0xff, 0x33, 0xff, 0x55, 0xff}

Definition at line 86 of file png.c.

png_pass_inc

PNG_CONST int FARDATA png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1}

Definition at line 67 of file png.c.

Referenced by png_do_write_interlace().

png_pass_mask

PNG_CONST int FARDATA png_pass_mask[]

Initial value:

=
    {0x80, 0x08, 0x88, 0x22, 0xaa, 0x55, 0xff}

Definition at line 81 of file png.c.

png_pass_start

PNG_CONST int FARDATA png_pass_start[] = {0, 4, 0, 2, 0, 1, 0}

Definition at line 64 of file png.c.

Referenced by png_do_write_interlace().

png_pass_yinc

PNG_CONST int FARDATA png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2}

Definition at line 73 of file png.c.

png_pass_ystart

PNG_CONST int FARDATA png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1}

Definition at line 70 of file png.c.

PNG_pCAL

PNG_pCAL

Definition at line 49 of file png.c.

PNG_pHYs

PNG_pHYs

Definition at line 51 of file png.c.

PNG_PLTE

PNG_PLTE

Definition at line 41 of file png.c.

PNG_sBIT

PNG_sBIT

Definition at line 52 of file png.c.

PNG_sCAL

PNG_sCAL

Definition at line 50 of file png.c.

png_sig

PNG_CONST png_byte FARDATA png_sig[8] = {137, 80, 78, 71, 13, 10, 26, 10}

Definition at line 34 of file png.c.

PNG_sPLT

PNG_sPLT

Definition at line 53 of file png.c.

PNG_sRGB

PNG_sRGB

Definition at line 54 of file png.c.

PNG_tEXt

PNG_tEXt

Definition at line 55 of file png.c.

PNG_tIME

PNG_tIME

Definition at line 56 of file png.c.

PNG_tRNS

PNG_tRNS

Definition at line 57 of file png.c.

PNG_zTXt

PNG_zTXt

Definition at line 58 of file png.c.