Go and webcam

webcam.go

// Example program that uses blakjack/webcam library
package main

import (
	"fmt"
	"os"

	"github.com/blackjack/webcam"
)

func main() {
	cam, err := webcam.Open("/dev/video0")
	if err != nil {
		panic(err.Error())
	}
	defer cam.Close()

	var format webcam.PixelFormat
	for f, d := range cam.GetSupportedFormats() {
		if d == "Motion-JPEG" {
			format = f
			break
		}
	}
	_, _, _, err = cam.SetImageFormat(format, 320, 240)
	if err != nil {
		panic(err.Error())
	}

	err = cam.StartStreaming()
	if err != nil {
		panic(err.Error())
	}

	for {
		err = cam.WaitForFrame(5)

		switch err.(type) {
		case nil:
		case *webcam.Timeout:
			continue
		default:
			panic(err.Error())
		}

		frame, err := cam.ReadFrame()
		if len(frame) != 0 {
			os.Stdout.Write([]byte("Content-Type: image/jpeg\r\n"))
			os.Stdout.Write([]byte(fmt.Sprintf("Content-Length: %d\r\n\r\n", len(frame))))
			os.Stdout.Write(frame)
			os.Stdout.Write([]byte("\r\n"))
			os.Stdout.Write([]byte("--informs\r\n"))

			os.Stdout.Sync()
		} else if err != nil {
			panic(err.Error())
		}
	}
}