删除video检测的代码，添加延时输出的代码。

app/android/java/com/khronos/vulkan_samples/MainActivity.java

@@ -6,6 +6,7 @@ import android.content.pm.PackageManager;
 import android.os.Bundle;
 import android.os.Handler;
 import android.os.Looper;
+import android.os.SystemClock;
 import android.util.Log;
 import android.view.WindowManager;
 import android.widget.Toast;
@@ -182,6 +183,12 @@ public class MainActivity extends GameActivity implements FaceLandmarkerHelper.L
                     @Override
                     public void analyze(@NonNull ImageProxy image) {
                         try {
+                            long analyzeTime = SystemClock.elapsedRealtimeNanos();
+                            long captureTime = image.getImageInfo().getTimestamp();
+                            long latencyNs = analyzeTime - captureTime;
+                            double latencyMs = latencyNs / 1_000_000.0;
+
+                            Log.d("CameraLatency", String.format("Image capture to analyze latency: %.2f ms", latencyMs));
                             //Log.d("Camera", "Received image: " + image.getWidth() + "x" + image.getHeight());
                             processImageForVulkan(image);
                             detectFace(image);
@@ -315,7 +322,7 @@ public class MainActivity extends GameActivity implements FaceLandmarkerHelper.L
             nativeBuffer.order(ByteOrder.nativeOrder());
         }
 
-
+        long start_time =  System.currentTimeMillis();
 
 //        ArrayList<Vector> vertexs = new ArrayList<>();
 //        ArrayList<Integer> triangle_index = new ArrayList<>();
@@ -358,7 +365,10 @@ public class MainActivity extends GameActivity implements FaceLandmarkerHelper.L
         FloatBuffer floatBuffer = nativeBuffer.asFloatBuffer();
         floatBuffer.put(points);
         floatBuffer.position(0);
+        long cur_time =  System.currentTimeMillis();
+        Log.i("TimeLatency","Result Data ProcessTime:" + (cur_time-start_time));
         passDataToNative(nativeBuffer, index, width, height);
+        Log.i("TimeLatency","passDataToNative ProcessTime:" + (System.currentTimeMillis() - cur_time));
     }
 
     public float z_rate = -1.0f;