Sync object-detection from metro-analytics-catalog

README.md

@@ -236,9 +236,8 @@ The pipeline below runs the FP16 YOLO26 detector on the sample video via
 import gi
 
 gi.require_version("Gst", "1.0")
-gi.require_version("GstVideo", "1.0")
-from gi.repository import Gst
-from gstgva import VideoFrame
+gi.require_version("GstAnalytics", "1.0")
+from gi.repository import Gst, GLib, GstAnalytics
 
 Gst.init(None)
 
@@ -261,11 +260,18 @@ pipeline = Gst.parse_launch(pipeline_str)
 
 def on_buffer(pad, info):
     buf = info.get_buffer()
-    caps = pad.get_current_caps()
-    frame = VideoFrame(buf, caps=caps)
-    for region in frame.regions():
-        print(f"  {region.label()} at ({region.rect().x},{region.rect().y})",
-              flush=True)
+    rmeta = GstAnalytics.buffer_get_analytics_relation_meta(buf)
+    if rmeta is None:
+        return Gst.PadProbeReturn.OK
+    idx = 1
+    while True:
+        ok, od = rmeta.get_od_mtd(idx)
+        if not ok:
+            break
+        label = GLib.quark_to_string(od.get_obj_type())
+        _, x, y, w, h, conf = od.get_location()
+        print(f"  {label} at ({int(x)},{int(y)})", flush=True)
+        idx += 1
     return Gst.PadProbeReturn.OK