Revert example changes

cameraserver/src/main/java/edu/wpi/first/vision/VisionRunner.java

@@ -23,7 +23,6 @@ public class VisionRunner<P extends VisionPipeline> {
   private final CvSink m_cvSink = new CvSink("VisionRunner CvSink");
   private final P m_pipeline;
   private final Mat m_image = new Mat();
-  private long m_lastFrameTime = 0;
   private final Listener<? super P> m_listener;
   private volatile boolean m_enabled = true;
 
@@ -82,7 +81,7 @@ public void runOnce() {
   }
 
   private void runOnceInternal() {
-    long frameTime = m_cvSink.grabFrame(m_image, m_lastFrameTime);
+    long frameTime = m_cvSink.grabFrame(m_image);
     if (frameTime == 0) {
       // There was an error, report it
       String error = m_cvSink.getError();
@@ -91,8 +90,6 @@ private void runOnceInternal() {
       // No errors, process the image
       m_pipeline.process(m_image);
       m_listener.copyPipelineOutputs(m_pipeline);
-
-      m_lastFrameTime = frameTime;
     }
   }
 

wpilibcExamples/src/main/cpp/examples/AprilTagsVision/cpp/Robot.cpp

@@ -91,25 +91,18 @@ class Robot : public frc::TimedRobot {
         nt::NetworkTableInstance::GetDefault().GetTable("apriltags");
     auto pubTags = tagsTable->GetIntegerArrayTopic("tags").Publish();
 
-    // Keep track of the timestamp of the last frame we processed. This lets us
-    // ask CSCore for the next image we haven't yet seen
-    uint64_t lastFrameTime{0};
-
     while (true) {
       // Tell the CvSink to grab a frame from the camera and
       // put it in the source mat.  If there is an error notify the
       // output.
-      auto frameTime = cvSink.GrabFrame(mat, lastFrameTime = lastFrameTime);
+      auto frameTime = cvSink.GrabFrame(mat);
       if (frameTime == 0) {
         // Send the output the error.
         outputStream.NotifyError(cvSink.GetError());
         // skip the rest of the current iteration
         continue;
       }
 
-      // Write the frame time down for next loop
-      lastFrameTime = frameTime;
-
       cv::cvtColor(mat, grayMat, cv::COLOR_BGR2GRAY);
 
       cv::Size g_size = grayMat.size();