webp

PkgDoc: http://godoc.org/github.com/chai2010/webp

Install

Install GCC or MinGW (download here) at first, and then run these commands:

1. go get github.com/chai2010/webp
2. go run hello.go

Example

package main

import (
	"bytes"
	"fmt"
	"io/ioutil"
	"log"

	"github.com/chai2010/webp"
)

func main() {
	var buf bytes.Buffer
	var width, height int
	var data []byte
	var err error

	// Load file data
	if data, err = ioutil.ReadFile("./testdata/1_webp_ll.webp"); err != nil {
		log.Fatal(err)
	}

	// GetInfo
	if width, height, _, err = webp.GetInfo(data); err != nil {
		log.Fatal(err)
	}
	fmt.Printf("width = %d, height = %d\n", width, height)

	// Decode webp
	m, err := webp.Decode(bytes.NewReader(data))
	if err != nil {
		log.Fatal(err)
	}

	// Encode lossless webp
	if err = webp.Encode(&buf, m, &webp.Options{Lossless: true}); err != nil {
		log.Fatal(err)
	}
	if err = ioutil.WriteFile("output.webp", buf.Bytes(), 0666); err != nil {
		log.Fatal(err)
	}
	fmt.Printf("Save output.webp ok\n")
}

BUGS

Report bugs to chaishushan@gmail.com.

Thanks!