pngtest

Documentation

Index

• func Decode(t testing.TB, r io.Reader) image.Image
• func DecodeConfig(t testing.TB, r io.Reader) image.Config
• func Encode(t testing.TB, w io.Writer, m image.Image)

Functions

func Decode

func Decode(t testing.TB, r io.Reader) image.Image

Decode reads a PNG image from r and returns it as an image.Image. The type of Image returned depends on the PNG contents.

func DecodeConfig

func DecodeConfig(t testing.TB, r io.Reader) image.Config

DecodeConfig returns the color model and dimensions of a PNG image without decoding the entire image.

func Encode

func Encode(t testing.TB, w io.Writer, m image.Image)

Encode writes the Image m to w in PNG format. Any Image may be encoded, but images that are not image.NRGBA might be encoded lossily.