完成新模型输入，发延时优化版本。

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

@@ -37,6 +37,7 @@ import java.util.List;
 import java.util.concurrent.ExecutionException;
 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;
+import java.util.concurrent.TimeUnit;
 
 public class MainActivity extends GameActivity implements FaceLandmarkerHelper.LandmarkerListener, CameraDataFetcher.CameraDataCallback {
     private ProcessCameraProvider cameraProvider;
@@ -179,19 +180,45 @@ public class MainActivity extends GameActivity implements FaceLandmarkerHelper.L
 
 
                 imageAnalyzer.setAnalyzer(backgroundExecutor, new ImageAnalysis.Analyzer() {
+                    private long lastCaptureTime = 0;
+                    private int frameCount = 0;
 
                     @Override
                     public void analyze(@NonNull ImageProxy image) {
+                        frameCount++;
+                        long currentTime = System.currentTimeMillis();
                         try {
-                            long analyzeTime = SystemClock.elapsedRealtimeNanos();
-                            long captureTime = image.getImageInfo().getTimestamp();
-                            long latencyNs = analyzeTime - captureTime;
-                            double latencyMs = latencyNs / 1_000_000.0;
+                            long captureTimeNs = image.getImageInfo().getTimestamp();
+                            long analyzeTime = System.currentTimeMillis();
+
+                            // 简单直接的计算方法
+                            long captureTimeMs = TimeUnit.NANOSECONDS.toMillis(captureTimeNs);
+                            long latency = analyzeTime - captureTimeMs;
+
+                            // 帧率计算
+                            if (lastCaptureTime > 0) {
+                                long frameInterval = captureTimeMs - lastCaptureTime;
+                                double fps = 1000.0 / frameInterval;
+
+                                if (frameCount % 10 == 0) { // 每30帧打印一次
+                                    Log.i("TimeLatency", String.format(
+                                            "Frame %d - Latency: %d ms, FPS: %.1f",
+                                            frameCount, latency, fps
+                                    ));
+                                }
+                            }
+
+                            lastCaptureTime = captureTimeMs;
 
-                            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);
+                            if(frameCount %2 == 0)
+                            {
+                                detectFace(image);
+                            }
+                            else
+                            {
+                                image.close();
+                            }
                         } finally {
                             //image.close(); // 确保在这里关闭
                             //Log.d("Camera", "Image closed, ready for next frame");