Fix camera capture reliability and rewrite tracking for available mediapipe/hardware

2026-07-31 14:01:06 +02:00
parent 2e6f444302
commit db5d09e156
12 changed files with 400 additions and 420 deletions
@@ -0,0 +1,76 @@
+"""
+Multi-camera concurrent streaming stress test.
+
+What it does:
+- Opens all cameras in CAM_INDICES simultaneously via CameraObject.open() (MSMF)
+- Continuously reads frames from all of them in a round-robin loop for TEST_DURATION_SECONDS
+- Tallies successful vs failed grabs per camera
+- Prints a summary so we know whether this hardware/USB topology can sustain
+  continuous simultaneous streaming from all cameras, which is what real-time
+  hand tracking (sending data to Unreal over UDP every frame) will need.
+
+Run standalone, no Qt/app required:
+    python Multi_Camera_Stream_Test.py
+"""
+
+import sys
+import os
+import time
+
+sys.path.append(os.path.join(os.path.dirname(__file__), ".."))
+
+from Tbd.helper import CameraObject
+
+CAM_INDICES = [1, 2, 3, 4, 5, 6]
+TEST_DURATION_SECONDS = 15
+WIDTH = 1920
+HEIGHT = 1080
+
+
+def main():
+    cameras = []
+
+    print("Opening cameras...")
+    for index in CAM_INDICES:
+        cam = CameraObject(capture=None, index=index)
+        ok = cam.open(width=WIDTH, height=HEIGHT)
+        print(f"cam{index}: {'opened' if ok else 'FAILED TO OPEN'}")
+        if ok:
+            cameras.append(cam)
+
+    if not cameras:
+        print("No cameras opened, aborting.")
+        return
+
+    print(f"\n{len(cameras)}/{len(CAM_INDICES)} cameras opened. Streaming for {TEST_DURATION_SECONDS}s...\n")
+
+    successes = {cam.index: 0 for cam in cameras}
+    failures = {cam.index: 0 for cam in cameras}
+
+    start = time.time()
+    while time.time() - start < TEST_DURATION_SECONDS:
+        for cam in cameras:
+            ok, frame = cam.capture.read()
+            if ok and frame is not None:
+                successes[cam.index] += 1
+            else:
+                failures[cam.index] += 1
+
+    elapsed = time.time() - start
+
+    print("=" * 50)
+    print(f"Results after {elapsed:.1f}s:")
+    for cam in cameras:
+        total = successes[cam.index] + failures[cam.index]
+        rate = successes[cam.index] / total * 100 if total else 0
+        fps = successes[cam.index] / elapsed
+        print(f"cam{cam.index}: {successes[cam.index]} ok / {failures[cam.index]} failed "
+              f"({rate:.1f}% success, ~{fps:.1f} fps)")
+    print("=" * 50)
+
+    for cam in cameras:
+        cam.close()
+
+
+if __name__ == "__main__":
+    main()