kvm/video.go

53 lines
1.2 KiB
Go

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
}