No text labels of bboxes displayed with osd

Gaming and Visualization Technologies Video Processing & Optical Flow
1

IN Tracker Probe , do we need any config change ??

display_meta = nvds_acquire_display_meta_from_pool(batch_meta);

        NvOSD_TextParams *txt_params  = &display_meta->text_params[0];

        if (txt_params->display_text)

        g_free (txt_params->display_text);

        display_meta->num_labels = 1;

        txt_params->display_text = (char *)g_malloc0 (MAX_DISPLAY_LEN);

        offset = snprintf(txt_params->display_text, MAX_DISPLAY_LEN, "%s ", obj_meta->text_params.display_text);
  

        g_print("\ntxt_params->display_text =%s\n", obj_meta->text_params.display_text);

                                 /* Now set the offsets where the string should appear */

      txt_params->x_offset = obj_meta->rect_params.left;

      txt_params->y_offset = obj_meta->rect_params.top - 25;

                      /* Font , font-color and font-size */

      txt_params->font_params.font_name = (char *)"Serif";

      txt_params->font_params.font_size = 18;

      txt_params->font_params.font_color.red = 1.0;

      txt_params->font_params.font_color.green = 1.0;

      txt_params->font_params.font_color.blue = 1.0;

      txt_params->font_params.font_color.alpha = 1.0;

      /* Text background color */

      txt_params->set_bg_clr = 1;

      txt_params->text_bg_clr.red = 0.0;

      txt_params->text_bg_clr.green = 0.0;

      txt_params->text_bg_clr.blue = 0.0;

      txt_params->text_bg_clr.alpha = 1.0;

    nvds_add_display_meta_to_frame (frame_meta, display_meta);