src/pngHelper.h File Reference

#include <png.h>
#include <cstdio>
#include <iostream>

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Namespaces
namespace	std
Defines
#define	PNG_NO_TYPECAST_NULL
	I/O Helper Methods that provide a more convenient interface between the libpng I/O and a general purpose image buffer repreentation.
Functions
int	check_if_png (const char *file_name, FILE **fp)
void	read_png (const char *file_name, unsigned char *&buffer, int &width, int &height, int &channels, int &bit_depth, int &color_type, bool flip_vert)
void	write_png (const char *file_name, unsigned char *buffer, int width, int height, int channels, int bit_depth, png_uint_32 color_type, bool flip_vert)
Variables
static unsigned const int	PNG_BYTES_TO_CHECK = 8

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Define Documentation

#define PNG_NO_TYPECAST_NULL

I/O Helper Methods that provide a more convenient interface between the libpng I/O and a general purpose image buffer repreentation.

by Christian Theobalt 2005

Definition at line 12 of file pngHelper.h.

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Function Documentation

int check_if_png	(	const char *	file_name,
		FILE **	fp
	)

Definition at line 25 of file pngHelper.h.

References PNG_BYTES_TO_CHECK.

Referenced by read_png().

void read_png	(	const char *	file_name,
		unsigned char *&	buffer,
		int &	width,
		int &	height,
		int &	channels,
		int &	bit_depth,
		int &	color_type,
		bool	flip_vert
	)

Definition at line 46 of file pngHelper.h.

References check_if_png().

Referenced by PNGImage::read().

void write_png	(	const char *	file_name,
		unsigned char *	buffer,
		int	width,
		int	height,
		int	channels,
		int	bit_depth,
		png_uint_32	color_type,
		bool	flip_vert
	)

Parameters:

	file_name	the file name
	buffer	image buffer
	witdh	width of the image
	height	height of the image
	channels	number of channels in the image
	bit_depth	per-channel bit depth
	color_type	can be PNG_COLOR_TYPE_GRAY, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB, PNG_COLOR_TYPE_RGBA, PNG_COLOR_TYPE_GA
	flip_vert	flip buffer vertically ?

Definition at line 168 of file pngHelper.h.

Referenced by PNGImage::write().

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Variable Documentation

unsigned const int PNG_BYTES_TO_CHECK = 8 [static]

Definition at line 18 of file pngHelper.h.

Referenced by check_if_png().

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