television

a simple LAN/WLAN desktop public broadcasting service
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tv.go (836B)

      1 package main
      2 
      3 import (
      4     "os"
      5     "log"
      6     "time"
      7     "net/http"
      8     "github.com/kbinani/screenshot"
      9     "github.com/pixiv/go-libjpeg/jpeg"
     10 )
     11 
     12 func snap() {
     13 
     14   for {
     15 
     16     img, err := screenshot.CaptureDisplay(0)
     17     if err != nil {
     18       panic(err)
     19     }
     20 
     21     fileName := "www/tv.jpg.tmp"
     22     file, _ := os.Create(fileName)
     23     defer file.Close()
     24 
     25     jpeg.Encode(file, img, &jpeg.EncoderOptions{
     26       Quality: 50,
     27       OptimizeCoding: false,
     28       ProgressiveMode: false,
     29       DCTMethod: jpeg.DCTIFast})
     30 
     31     os.Rename(fileName, "www/tv.jpg")
     32 
     33     log.Println("screenshot taken")
     34 
     35     time.Sleep(1000 * time.Millisecond)
     36 
     37     }
     38 }
     39 
     40 func main() {
     41 
     42   go snap()
     43 
     44   log.Println("we're live!")
     45   log.Println("ctrl-c for emergency shutdown")
     46 
     47   http.Handle("/", http.FileServer(http.Dir("www")))
     48   http.ListenAndServe(":8888", nil)
     49 
     50 }
     51