4.0初步改造

events.go

@@ -0,0 +1,20 @@
+package engine
+
+import (
+	"github.com/asaskevich/EventBus"
+)
+
+type TransCodeReq struct {
+	*Subscriber
+	RequestCodec string
+}
+
+const (
+	Event_SUBSCRIBE          = "Subscribe"
+	Event_UNSUBSCRIBE        = "UnSubscibe"
+	Event_STREAMCLOSE        = "StreamClose"
+	Event_PUBLISH            = "Publish"
+	Event_REQUEST_TRANSAUDIO = "RequestTransAudio"
+)
+
+var Bus = EventBus.New()