pngdiff

README

pngdiff

Golang library png format file diff and patch.

• Documentation: http://godoc.org/github.com/codeskyblue/pngdiff
• Example can be found in test

Documentation

Overview

Package pngdiff provides ... image.RGBA diff and patch

Index

• Variables
• func Diff(imold, imnew *image.RGBA) (patch *image.RGBA, err error)
• func Patch(im *image.RGBA, patch *image.RGBA) (out *image.RGBA, err error)
• func ReadFile(filename string) (im *image.RGBA, err error)
• func WriteFile(filename string, im *image.RGBA) error

Variables

var ErrSizeNotMatch = errors.New("Image size are different")

Functions

func Diff

func Diff(imold, imnew *image.RGBA) (patch *image.RGBA, err error)

Diff computes the difference bwtween old and new, and return the result.

func Patch

func Patch(im *image.RGBA, patch *image.RGBA) (out *image.RGBA, err error)

Patch applies patch to im, and writes the result to out

func ReadFile

func ReadFile(filename string) (im *image.RGBA, err error)

Read png file

func WriteFile

func WriteFile(filename string, im *image.RGBA) error

Write RGBA struct as png file