add webcodecs support

internal/webcodecs/webcodecs.go

@@ -0,0 +1,45 @@
+package webcodecs
+
+import (
+	"errors"
+
+	"github.com/AlexxIT/go2rtc/internal/api"
+	"github.com/AlexxIT/go2rtc/internal/api/ws"
+	"github.com/AlexxIT/go2rtc/internal/app"
+	"github.com/AlexxIT/go2rtc/internal/streams"
+	"github.com/AlexxIT/go2rtc/pkg/webcodecs"
+	"github.com/rs/zerolog"
+)
+
+func Init() {
+	log = app.GetLogger("webcodecs")
+
+	ws.HandleFunc("webcodecs", handlerWS)
+}
+
+var log zerolog.Logger
+
+func handlerWS(tr *ws.Transport, msg *ws.Message) error {
+	stream, _ := streams.GetOrPatch(tr.Request.URL.Query())
+	if stream == nil {
+		return errors.New(api.StreamNotFound)
+	}
+
+	cons := webcodecs.NewConsumer(nil)
+	cons.WithRequest(tr.Request)
+
+	if err := stream.AddConsumer(cons); err != nil {
+		log.Debug().Err(err).Msg("[webcodecs] add consumer")
+		return err
+	}
+
+	tr.Write(&ws.Message{Type: "webcodecs", Value: cons.GetInitInfo()})
+
+	go cons.WriteTo(tr.Writer())
+
+	tr.OnClose(func() {
+		stream.RemoveConsumer(cons)
+	})
+
+	return nil
+}