Release 202412292127

video.go

@@ -0,0 +1,52 @@
+package kvm
+
+import (
+	"encoding/json"
+	"log"
+)
+
+// max frame size for 1080p video, specified in mpp venc setting
+const maxFrameSize = 1920 * 1080 / 2
+
+func writeCtrlAction(action string) error {
+	actionMessage := map[string]string{
+		"action": action,
+	}
+	jsonMessage, err := json.Marshal(actionMessage)
+	if err != nil {
+		return err
+	}
+	err = WriteCtrlMessage(jsonMessage)
+	return err
+}
+
+type VideoInputState struct {
+	Ready          bool    `json:"ready"`
+	Error          string  `json:"error,omitempty"` //no_signal, no_lock, out_of_range
+	Width          int     `json:"width"`
+	Height         int     `json:"height"`
+	FramePerSecond float64 `json:"fps"`
+}
+
+var lastVideoState VideoInputState
+
+func triggerVideoStateUpdate() {
+	go func() {
+		writeJSONRPCEvent("videoInputState", lastVideoState, currentSession)
+	}()
+}
+func HandleVideoStateMessage(event CtrlResponse) {
+	videoState := VideoInputState{}
+	err := json.Unmarshal(event.Data, &videoState)
+	if err != nil {
+		log.Println("Error parsing video state json:", err)
+		return
+	}
+	lastVideoState = videoState
+	triggerVideoStateUpdate()
+	requestDisplayUpdate()
+}
+
+func rpcGetVideoState() (VideoInputState, error) {
+	return lastVideoState, nil
+}