Refactor: Rename NanoKVM to BatchuKVM and update server URL

server/service/stream/frame_rate.go

@@ -0,0 +1,63 @@
+package stream
+
+import (
+	"fmt"
+	"os"
+	"sync"
+	"sync/atomic"
+	"time"
+
+	log "github.com/sirupsen/logrus"
+)
+
+var (
+	counter     *FrameRateCounter
+	counterOnce sync.Once
+)
+
+type FrameRateCounter struct {
+	frameCount int32
+	fps        int32
+	mutex      sync.Mutex
+}
+
+func GetFrameRateCounter() *FrameRateCounter {
+	counterOnce.Do(func() {
+		counter = &FrameRateCounter{}
+
+		go func() {
+			ticker := time.NewTicker(3 * time.Second)
+			defer ticker.Stop()
+
+			for range ticker.C {
+				counter.mutex.Lock()
+
+				currentCount := atomic.LoadInt32(&counter.frameCount)
+
+				counter.fps = currentCount / 3
+				atomic.StoreInt32(&counter.frameCount, 0)
+
+				counter.mutex.Unlock()
+
+				data := fmt.Sprintf("%d", counter.fps)
+				err := os.WriteFile("/kvmapp/kvm/now_fps", []byte(data), 0o666)
+				if err != nil {
+					log.Errorf("failed to write fps: %s", err)
+				}
+			}
+		}()
+	})
+
+	return counter
+}
+
+func (f *FrameRateCounter) Update() {
+	atomic.AddInt32(&f.frameCount, 1)
+}
+
+func (f *FrameRateCounter) GetFPS() int32 {
+	f.mutex.Lock()
+	defer f.mutex.Unlock()
+
+	return f.fps
+}