使用分离方式，修改视频流返回方式,使用redis存是否在获取

handler/tool.go

@@ -113,15 +113,22 @@ func GetVideoStream(c *gin.Context) {
 				log.Printf("device:%d frame close err:%v", deviceID, err4)
 			}
 		}()
+		errCount := 0
 		for {
+			if errCount > 10 {
+				log.Printf("stream device:%d errCount > 10", deviceID)
+				return false
+			}
 			cnt := service.GetDeviceCurrentFrameV2(&frame, deviceID)
 			if cnt == count {
 				time.Sleep(50 * time.Millisecond)
+				errCount++
 				continue
 			}
 			if frame.Empty() {
 				log.Printf("stream device:%d frame is empty", deviceID)
 				time.Sleep(100 * time.Millisecond)
+				errCount++
 				continue
 			}
 			//gocv.Matrix转为jpeg
@@ -191,9 +198,10 @@ func subscribeAndHandleMessagesV3(ws *websocket.Conn, device_id int) {
 	count := 0
 	//定时器，发送计数器
 	t_count := 0
+	img := gocv.NewMat()
 	for {
 		//从service获取当前帧
-		img, c := service.GetDeviceCurrentFrameV3(device_id)
+		c := service.GetDeviceCurrentFrameV2(&img, device_id)
 		if c != count {
 			//将img转[]byte
 			if img.Empty() {
@@ -215,10 +223,6 @@ func subscribeAndHandleMessagesV3(ws *websocket.Conn, device_id int) {
 					break
 				}
 				c = count
-				err4 := img.Close()
-				if err4 != nil {
-					log.Printf("close img err:%v", err)
-				}
 			}
 		} else {
 			//每秒发送一次心跳检测
@@ -236,6 +240,11 @@ func subscribeAndHandleMessagesV3(ws *websocket.Conn, device_id int) {
 		time.Sleep(100 * time.Millisecond)
 		t_count++
 	}
+	// 关闭img
+	err := img.Close()
+	if err != nil {
+		log.Printf("device:%d img close err:%v", device_id, err)
+	}
 
 	// 查看是否还有其他连接，没有则设置 is_play 为 0
 	if worker.IsContainKey(online_conn_key) == false {

service/tool.go

@@ -109,17 +109,25 @@ func GetDeviceCurrentFrameV2(frame *gocv.Mat, deviceId int) int {
 	}
 	mutex.RLock()
 	defer mutex.RUnlock()
-	var frame_ gocv.Mat
 	//获取当前帧
-	frameIface, ok := DeviceCurrentFrameMap.Load(deviceId)
-	if !ok {
-		return -1
+	switch deviceId {
+	case 1:
+		if (*frame).Empty() {
+			*frame = gocv.NewMatWithSize(Device1CurrentFrame.Rows(), Device1CurrentFrame.Cols(), Device1CurrentFrame.Type())
+		}
+		Device1CurrentFrame.CopyTo(frame)
+	case 50:
+		if (*frame).Empty() {
+			*frame = gocv.NewMatWithSize(Device50CurrentFrame.Rows(), Device50CurrentFrame.Cols(), Device50CurrentFrame.Type())
+		}
+		Device50CurrentFrame.CopyTo(frame)
+	case 73:
+		if (*frame).Empty() {
+			*frame = gocv.NewMatWithSize(Device73CurrentFrame.Rows(), Device73CurrentFrame.Cols(), Device73CurrentFrame.Type())
+		}
+		Device73CurrentFrame.CopyTo(frame)
+
 	}
-	frame_, ok = frameIface.(gocv.Mat)
-	if !ok {
-		log.Printf("DeviceCurrentFrameMap 存储的不是 gocv.Mat 类型，device_id: %d \n", deviceId)
-	}
-	*frame = frame_
 	frameCount, ok := DeviceFrameCount[deviceId]
 	if !ok {
 		return -1