尝试锁定对焦一次

app/src/main/cpp/camera2/ndkcamera.cpp

@@ -1272,9 +1272,15 @@ void NdkCamera::onCaptureCompleted(ACameraCaptureSession* session, ACaptureReque
     {
         if (mResult.afState == ACAMERA_CONTROL_AF_STATE_PASSIVE_FOCUSED)
         {
-            uint8_t trig = ACAMERA_CONTROL_AF_TRIGGER_START;
-            status = ACaptureRequest_setEntry_u8(capture_request, ACAMERA_CONTROL_AF_TRIGGER, 1, &trig);
-            XYLOG(XYLOG_SEVERITY_DEBUG, "Trigger AF AFS=%u", (uint32_t)mResult.afState);
+            // Will lock it
+            if (mResult.afLockSetted == 0)
+            {
+                uint8_t trig = ACAMERA_CONTROL_AF_TRIGGER_START;
+                status = ACaptureRequest_setEntry_u8(capture_request, ACAMERA_CONTROL_AF_TRIGGER, 1, &trig);
+
+                mResult.afLockSetted = 1;
+                XYLOG(XYLOG_SEVERITY_DEBUG, "Trigger AF AFS=%u", (uint32_t)mResult.afState);
+            }
         }
     }