Metadata class_name field overwritten

[vesuvisian]

Using the gst_objects_info_meta library and Python bindings, it seems that the class_name field is getting overwritten/corrupted. For instance, I've got detector and annotator elements, where the former is generating the bounding boxes, and the latter is drawing them on the frame. Printing things out while the pipeline runs, I get something like b'\x01' as the class label. I assume this has something to do with memory not being allocated correctly for that field but am not sure how to fix it.

[vesuvisian]

Thanks to the help of someone more versed in C than myself, it looks like adding in something like

        for (int i=0; i<size; i++) {
            GstObjectInfo *object = objects->items+i;
            int class_name_len = 0;
            if (object->class_name != NULL) {
                class_name_len = strlen(object->class_name);
            }
            GstObjectInfo *object2 = gst_objects_info_meta->objects.items+i;
            if (class_name_len > 0) {
                object2->class_name = malloc(class_name_len+1);
                memcpy(object2->class_name, object->class_name, class_name+1);
            }
        }

immediately after the memcpy in the gst_buffer_add_objects_info_meta function seems to get it working.