Adds support RTSPtoWeb API (entity_id for zero config from Hass)

cmd/hass/api.go

@@ -0,0 +1,94 @@
+package hass
+
+import (
+	"encoding/base64"
+	"encoding/json"
+	"github.com/AlexxIT/go2rtc/cmd/api"
+	"github.com/AlexxIT/go2rtc/cmd/streams"
+	"github.com/AlexxIT/go2rtc/cmd/webrtc"
+	"net/http"
+	"strings"
+)
+
+func initAPI() {
+	ok := func(w http.ResponseWriter, r *http.Request) {
+		w.Header().Set("Content-Type", "application/json")
+		_, _ = w.Write([]byte(`{"status":1,"payload":{}}`))
+	}
+
+	// support https://www.home-assistant.io/integrations/rtsp_to_webrtc/
+	api.HandleFunc("/static", func(w http.ResponseWriter, r *http.Request) {
+		w.WriteHeader(http.StatusOK)
+	})
+
+	api.HandleFunc("/streams", ok)
+
+	api.HandleFunc("/stream/", func(w http.ResponseWriter, r *http.Request) {
+		switch {
+		// /stream/{id}/add
+		case strings.HasSuffix(r.RequestURI, "/add"):
+			var v addJSON
+			if err := json.NewDecoder(r.Body).Decode(&v); err != nil {
+				return
+			}
+
+			if streams.Has(v.Name) {
+				stream := streams.Get(v.Name)
+				stream.SetSource(v.Channels.First.Url)
+			} else {
+				streams.New(v.Name, v.Channels.First.Url)
+			}
+
+			ok(w, r)
+
+		// /stream/{id}/channel/0/webrtc
+		default:
+			i := strings.IndexByte(r.RequestURI[8:], '/')
+			src := r.RequestURI[8 : 8+i]
+			if !streams.Has(src) {
+				w.WriteHeader(http.StatusNotFound)
+				return
+			}
+
+			if err := r.ParseForm(); err != nil {
+				log.Error().Err(err).Msg("[api.hass] parse form")
+				return
+			}
+
+			s := r.FormValue("data")
+			offer, err := base64.StdEncoding.DecodeString(s)
+			if err != nil {
+				log.Error().Err(err).Msg("[api.hass] sdp64 decode")
+				return
+			}
+
+			// check if stream links to our rtsp server
+			//if strings.HasPrefix(src, "rtsp://") {
+			//	i := strings.IndexByte(src[7:], '/')
+			//	if i > 0 && streams.Has(src[8+i:]) {
+			//		src = src[8+i:]
+			//	}
+			//}
+
+			stream := streams.Get(src)
+			s, err = webrtc.ExchangeSDP(stream, string(offer), r.UserAgent())
+			if err != nil {
+				log.Error().Err(err).Msg("[api.hass] exchange SDP")
+				return
+			}
+
+			s = base64.StdEncoding.EncodeToString([]byte(s))
+			_, _ = w.Write([]byte(s))
+		}
+	})
+}
+
+type addJSON struct {
+	Name     string `json:"name"`
+	Channels struct {
+		First struct {
+			//Name string `json:"name"`
+			Url string `json:"url"`
+		} `json:"0"`
+	} `json:"channels"`
+}

cmd/hass/hass.go

@@ -1,20 +1,14 @@
 package hass
 
 import (
-	"encoding/base64"
 	"encoding/json"
 	"fmt"
-	"github.com/AlexxIT/go2rtc/cmd/api"
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/cmd/streams"
-	"github.com/AlexxIT/go2rtc/cmd/webrtc"
 	"github.com/AlexxIT/go2rtc/pkg/streamer"
 	"github.com/rs/zerolog"
-	"net/http"
-	"net/url"
 	"os"
 	"path"
-	"strings"
 )
 
 func Init() {
@@ -28,11 +22,7 @@ func Init() {
 
 	log = app.GetLogger("hass")
 
-	// support https://www.home-assistant.io/integrations/rtsp_to_webrtc/
-	api.HandleFunc("/static", func(w http.ResponseWriter, r *http.Request) {
-		w.WriteHeader(http.StatusOK)
-	})
-	api.HandleFunc("/stream", handler)
+	initAPI()
 
 	// support load cameras from Hass config file
 	filename := path.Join(conf.Mod.Config, ".storage/core.config_entries")
@@ -85,66 +75,6 @@ func Init() {
 
 var log zerolog.Logger
 
-func handler(w http.ResponseWriter, r *http.Request) {
-	if err := r.ParseForm(); err != nil {
-		log.Error().Err(err).Msg("[api.hass] parse form")
-		return
-	}
-
-	src := r.FormValue("url")
-	src, err := url.QueryUnescape(src)
-	if err != nil {
-		log.Error().Err(err).Msg("[api.hass] query unescape")
-		return
-	}
-
-	str := r.FormValue("sdp64")
-
-	offer, err := base64.StdEncoding.DecodeString(str)
-	if err != nil {
-		log.Error().Err(err).Msg("[api.hass] sdp64 decode")
-		return
-	}
-
-	// check if stream links to our rtsp server
-	if strings.HasPrefix(src, "rtsp://") {
-		i := strings.IndexByte(src[7:], '/')
-		if i > 0 && streams.Has(src[8+i:]) {
-			src = src[8+i:]
-		}
-	}
-
-	stream := streams.Get(src)
-	if stream == nil {
-		log.Error().Str("url", src).Msg("[api.hass] unsupported source")
-		return
-	}
-
-	str, err = webrtc.ExchangeSDP(stream, string(offer), r.UserAgent())
-	if err != nil {
-		log.Error().Err(err).Msg("[api.hass] exchange SDP")
-		return
-	}
-
-	resp := struct {
-		Answer string `json:"sdp64"`
-	}{
-		Answer: base64.StdEncoding.EncodeToString([]byte(str)),
-	}
-
-	data, err := json.Marshal(resp)
-	if err != nil {
-		log.Error().Err(err).Msg("[api.hass] marshal JSON")
-		return
-	}
-
-	w.Header().Set("Content-Type", "application/json")
-	if _, err = w.Write(data); err != nil {
-		log.Error().Err(err).Msg("[api.hass] write")
-		return
-	}
-}
-
 type entries struct {
 	Data struct {
 		Entries []struct {

cmd/streams/stream.go

@@ -38,6 +38,12 @@ func NewStream(source interface{}) *Stream {
 	return s
 }
 
+func (s *Stream) SetSource(source string) {
+	if len(s.producers) > 0 {
+		s.producers[0].url = source
+	}
+}
+
 func (s *Stream) AddConsumer(cons streamer.Consumer) (err error) {
 	ic := len(s.consumers)
 

cmd/streams/streams.go

@@ -4,6 +4,7 @@ import (
 	"github.com/AlexxIT/go2rtc/cmd/app"
 	"github.com/AlexxIT/go2rtc/cmd/app/store"
 	"github.com/rs/zerolog"
+	"strings"
 )
 
 func Init() {
@@ -27,7 +28,6 @@ func Init() {
 func Get(src string) *Stream {
 	if stream, ok := streams[src]; ok {
 		return stream
-
 	}
 
 	if !HasProducer(src) {
@@ -45,6 +45,19 @@ func Has(src string) bool {
 }
 
 func New(name string, source interface{}) {
+	switch source := source.(type) {
+	case string:
+		// check if new stream already link on our other stream
+		if strings.HasPrefix(source, "rtsp://") {
+			if i := strings.IndexByte(source[7:], '/'); i > 0 {
+				if stream, ok := streams[source[8+i:]]; ok {
+					streams[name] = stream
+					return
+				}
+			}
+		}
+	}
+
 	streams[name] = NewStream(source)
 }