png_writer.h File Reference

libpng file output utility wrapper. More...

#include "common.h"
#include "ppm.h"

Go to the source code of this file.

Functions
int	Png_WriteRgbaImage (const char *path, const RgbaColor *pixels, int width, int height)
	Writes an RGBA pixel buffer to a standard PNG file. More...
int	Png_WriteRgbaImageScaled (const char *path, const RgbaColor *pixels, int width, int height, int scale)
	Writes an RGBA pixel buffer scaled by a scaling factor to a PNG. More...

Detailed Description

libpng file output utility wrapper.

Function Documentation

Png_WriteRgbaImage()

int Png_WriteRgbaImage	(	const char *	path,
		const RgbaColor *	pixels,
		int	width,
		int	height
	)

Writes an RGBA pixel buffer to a standard PNG file.

Parameters

path	File path to save the PNG.
pixels	Source RGBA pixels buffer.
width	Width of image.
height	Height of image.

Returns

0 on success; negative value on file open or libpng initialization error.

Png_WriteRgbaImageScaled()

int Png_WriteRgbaImageScaled	(	const char *	path,
		const RgbaColor *	pixels,
		int	width,
		int	height,
		int	scale
	)

Writes an RGBA pixel buffer scaled by a scaling factor to a PNG.

Parameters

path	File path to save.
pixels	Source RGBA pixels.
width	Canvas width before scaling.
height	Canvas height before scaling.
scale	Bilinear scale multiplier.

Returns

0 on success; negative value on error.