README.md

bmp

Package bmp implements a BMP image decoder and encoder.

The BMP specification is at http://www.digicamsoft.com/bmp/bmp.html.

Supported BMP features

• 1, 2, 4, 8, 16, 24 and 32 bits per pixel
• Top-down images (read-only)
• RLE compression for 4 and 8 BPP images (read-only)
• RGB555 and RGB565 types for 16 BPP images (read-only)

Installation

Use go get:

go get github.com/sergeymakinen/go-bmp

Then import the package into your own code:

import "github.com/sergeymakinen/go-bmp"

Example

f, _ := os.Open("file.bmp")
img, _ := bmp.Decode(f)
for i := 10; i < 20; i++ {
    img.(draw.Image).Set(i, i, color.NRGBA{
        R: 255,
        G: 0,
        B: 0,
        A: 255,
    })
}
f.Truncate(0)
bmp.Encode(f, img)
f.Close()

License

BSD 3-Clause