NvdsTracker API sample

[sumityadav]

I was facing the same issue with object-id, the mistake i made was i added the probe in source pad of nvinfer element. But object-id is set by nvtracker element so i should add the probe in source pad of nvtracker or other elements that are downstream to nvtracker.
you can resolve it by changing this code

infer_src_pad = gst_element_get_static_pad (pgie, "src");
  if (!infer_src_pad)
    g_print ("Unable to get source pad\n");
  else
    gst_pad_add_probe (infer_src_pad, GST_PAD_PROBE_TYPE_BUFFER,
        nvinfer_src_pad_buffer_probe, NULL, NULL);

to this code.

infer_src_pad = gst_element_get_static_pad (nvtracker, "src");
  if (!infer_src_pad)
    g_print ("Unable to get source pad\n");
  else
    gst_pad_add_probe (infer_src_pad, GST_PAD_PROBE_TYPE_BUFFER,
        nvinfer_src_pad_buffer_probe, NULL, NULL);

@ChrisDing

How do you get your object-id ?

NvDsBatchMeta *batch_meta = gst_buffer_get_nvds_batch_meta (buf);

	for (l_frame = batch_meta->frame_meta_list; l_frame != NULL;
			l_frame = l_frame->next) {

		NvDsFrameMeta *frame_meta = (NvDsFrameMeta *) (l_frame->data);
		int offset = 0;
		for (l_obj = frame_meta->obj_meta_list; l_obj != NULL; l_obj = l_obj->next) {
			obj_meta = (NvDsObjectMeta *) (l_obj->data);
			 const std::type_info& r2 = typeid(obj_meta);
		
			std::cout<<"obj_id = "<<<b>obj_meta->object_id</b><<std::endl;
}