114 lines
2.7 KiB
Go
Executable file
114 lines
2.7 KiB
Go
Executable file
package main
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import (
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"encoding/json"
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"image"
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"io/ioutil"
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"log"
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"net/http"
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"path/filepath"
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"text/template"
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"gocv.io/x/gocv"
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)
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var baseHTML = filepath.Join("templates", "base.html")
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var indexHTML = filepath.Join("templates", "index.html")
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var streamHTML = filepath.Join("templates", "stream.html")
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// Server is the main application struct
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type Server struct {
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Streams map[string]Stream
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}
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func (server Server) index(w http.ResponseWriter, r *http.Request) {
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if r.FormValue("URL") == "" {
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indexTemplate, err := template.ParseFiles(indexHTML, baseHTML)
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if err != nil {
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log.Fatal(err)
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}
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indexTemplate.Execute(w, nil)
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return
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}
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URL := r.FormValue("URL")
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stream, exists := server.Streams[URL]
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if !exists {
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stream = NewStream(URL)
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server.Streams[URL] = stream
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go stream.Update()
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}
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streamTemplate, err := template.ParseFiles(streamHTML, baseHTML)
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if err != nil {
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log.Fatal(err)
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}
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streamTemplate.Execute(w, stream)
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}
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func (server Server) stream(w http.ResponseWriter, r *http.Request) {
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if r.FormValue("URL") == "" {
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return
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}
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w.Header().Set("Content-Type", "image/jpeg")
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URL := r.FormValue("URL")
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stream, exists := server.Streams[URL]
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if !exists {
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return
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}
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mat := stream.GetStreamInstant()
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diff := gocv.NewMat()
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mat.CopyTo(&diff)
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gocv.CvtColor(diff, &diff, gocv.ColorBGRAToGray)
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gocv.GaussianBlur(diff, &diff, image.Point{X: 21, Y: 21}, 0, 0, gocv.BorderReflect)
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go stream.SaveStreamInstant(mat)
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if stream.PreviousInstantPathExists() {
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previous := stream.IMReadPrevious()
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gocv.GaussianBlur(previous, &previous, image.Point{X: 21, Y: 21}, 0, 0, gocv.BorderReflect)
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gocv.AbsDiff(previous, diff, &diff)
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gocv.Threshold(diff, &diff, 25, 255, gocv.ThresholdBinary)
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}
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jpg, err := gocv.IMEncode(".jpg", mat)
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if err != nil {
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log.Fatal("Could not encode Mat to jpg:", URL)
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}
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w.Write(jpg)
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}
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func main() {
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staticFileServer := http.FileServer(http.Dir("./static"))
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http.Handle("/static/", http.StripPrefix("/static/", staticFileServer))
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server := Server{
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Streams: make(map[string]Stream),
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}
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streams, err := ioutil.ReadDir(GetStreamDirPath())
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if err != nil {
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log.Fatal("Could not read Streamdir")
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}
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for _, streamStoreDir := range streams {
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if !streamStoreDir.IsDir() {
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continue
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}
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streamJSONPath := filepath.Join(GetStreamDirPath(), streamStoreDir.Name(), "stream.json")
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streamJSONFile, _ := ioutil.ReadFile(streamJSONPath)
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stream := Stream{}
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json.Unmarshal([]byte(streamJSONFile), &stream)
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server.Streams[stream.URL] = stream
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go stream.UpdateInterval()
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}
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http.HandleFunc("/", server.index)
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http.HandleFunc("/stream", server.stream)
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log.Fatal(http.ListenAndServe(":8080", nil))
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}
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