Added average frame rate output

lf-lang · May 1, 2024 · d925f34 · d925f34
1 parent f71224c
commit d925f34
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Showing 2 changed files with 7 additions and 1 deletion.
diff --git a/examples/Python/src/YOLOv5/Video.lf b/examples/Python/src/YOLOv5/Video.lf
@@ -46,12 +46,18 @@ reactor WebCam(webcam_id=0, offset = 0 s, period = 100 ms) {
 /** Display video frames. */
 reactor Display {
   input frame
+  state frame_count = 0
 
   reaction(startup) {=
     print("\n******* Press 'q' in the video window to exit *******\n")
   =}
 
   reaction(frame) {=
+    self.frame_count += 1
+    # Every hundred or so frames, report the frame rate.
+    if (self.frame_count % 100 == 0):
+      print(f"** Average frame rate: {self.frame_count * SEC(1) / lf.time.physical_elapsed()} f/s")
+
     cv2.imshow("frame", frame.value)
     # press 'Q' if you want to exit
     if cv2.waitKey(1) & 0xFF == ord('q'):

diff --git a/examples/Python/src/YOLOv5/YOLOv5_Webcam_Timer.lf b/examples/Python/src/YOLOv5/YOLOv5_Webcam_Timer.lf
@@ -15,7 +15,7 @@ import WebCam, Display from "Video.lf"
 
 main reactor {
   # Offset prevents deadline violations during startup.
-  webcam = new WebCam(webcam_id=0, offset = 2 s)
+  webcam = new WebCam(webcam_id=0, offset = 3 s)
   dnn = new DNN()
   plotter = new Plotter(label_deadline = 100 msec)
   display = new Display()