readpng.h File Reference

Go to the source code of this file.

Macros
#define	FALSE   0
#define	MAX(a, b)   ((a) > (b)? (a) : (b))
#define	MIN(a, b)   ((a) < (b)? (a) : (b))
#define	Trace(x)   ;

Typedefs
typedef unsigned char	uch
typedef unsigned short	ush
typedef unsigned long	ulg

Functions
void	readpng_version_info (void)
int	readpng_init (FILE *infile, ulg *pWidth, ulg *pHeight)
int	readpng_get_bgcolor (uch *bg_red, uch *bg_green, uch *bg_blue)
uch *	readpng_get_image (double display_exponent, int *pChannels, ulg *pRowbytes)
void	readpng_cleanup (int free_image_data)

Macro Definition Documentation

FALSE

#define FALSE   0

Definition at line 58 of file readpng.h.

MAX

#define MAX	(		a,
			b
	)		((a) > (b)? (a) : (b))

Definition at line 62 of file readpng.h.

MIN

#define MIN	(		a,
			b
	)		((a) < (b)? (a) : (b))

Definition at line 63 of file readpng.h.

Trace

#define Trace

(

x

)

;

Definition at line 69 of file readpng.h.

Typedef Documentation

uch

typedef unsigned char uch

Definition at line 72 of file readpng.h.

ulg

typedef unsigned long ulg

Definition at line 74 of file readpng.h.

ush

typedef unsigned short ush

Definition at line 73 of file readpng.h.

Function Documentation

readpng_cleanup()

void readpng_cleanup

(

int

free_image_data

)

Definition at line 296 of file readpng.c.

References free(), image_data, and NULL.

readpng_get_bgcolor()

int readpng_get_bgcolor	(	uch *	bg_red,
		uch *	bg_green,
		uch *	bg_blue
	)

Definition at line 154 of file readpng.c.

References png_jmpbuf.

readpng_get_image()

uch* readpng_get_image	(	double	display_exponent,
		int *	pChannels,
		ulg *	pRowbytes
	)

Definition at line 206 of file readpng.c.

readpng_init()

int readpng_init	(	FILE *	infile,
		ulg *	pWidth,
		ulg *	pHeight
	)

Definition at line 87 of file readpng.c.

References bit_depth, channels, color_type, height, infile, png_sig_cmp(), saved_infile, and width.

readpng_version_info()

void readpng_version_info

(

void

)

Definition at line 76 of file readpng.c.

References png_libpng_ver, PNG_LIBPNG_VER_STRING, ZLIB_VERSION, and zlib_version.