capture

Documentation

Overview

Package capture provides generic image conversion and processing helpers.

Index

• func EncodeJPEG(img image.Image, quality int) ([]byte, error)
• func EncodePNG(img image.Image) ([]byte, error)
• func GenerateDiff(old, new image.Image) image.Image
• func GoImageFromCGImage(cgImage coregraphics.CGImageRef, cropTopPx int) (image.Image, error)
• func ScaleImage(img image.Image, scale float64) image.Image

Functions

func EncodeJPEG

func EncodeJPEG(img image.Image, quality int) ([]byte, error)

EncodeJPEG encodes img as JPEG with quality.

func EncodePNG

func EncodePNG(img image.Image) ([]byte, error)

EncodePNG encodes img as PNG.

func GenerateDiff

func GenerateDiff(old, new image.Image) image.Image

GenerateDiff creates a diff image highlighting changes between two images.

func GoImageFromCGImage

func GoImageFromCGImage(cgImage coregraphics.CGImageRef, cropTopPx int) (image.Image, error)

GoImageFromCGImage converts a CGImageRef to a Go image.Image.

func ScaleImage

func ScaleImage(img image.Image, scale float64) image.Image

ScaleImage resizes an image by scale using bilinear interpolation.