test_fps.py

Author: Kontra2B

test/test_fps.py

@@ -0,0 +1,35 @@
+import subprocess
+import pytest
+import re
+
+@pytest.mark.d457
+@pytest.mark.parametrize("device", {'0', '2'})
+@pytest.mark.parametrize("frames", {'100'})
+@pytest.mark.parametrize("timeout", {10})
+def test_fps(device, frames, timeout):
+	try:
+		cmd = [ "v4l2-ctl",
+		 "-d" + device,
+		 "--stream-mmap",
+		 "--stream-count",
+		 frames,
+		 "--verbose"]
+		output = subprocess.run(cmd,
+						  check=True,
+						  text=True,
+						  capture_output=True,
+						  timeout=timeout).stderr.splitlines()
+		last = None
+		for line in output:
+			m = re.search(r"cap dqbuf:.*seq:\s*(\d*)\s*bytesused:.*fps:\s*(\d+\.\d+)\s*.*", line)
+			if m:
+				frame = int(m.group(1))
+				fps = float(m.group(2))
+				if last:
+					print(f"frame: {frame}/{last}, fps: {fps}")
+					assert frame != last, f"Repeated frame: {frame}"
+					assert frame == last+1, f"Frame droped between: {last} and {frame}"
+				last = frame
+
+	except Exception as e:
+		assert False, "Exception caught during test: {}".format(e)