+ screenshot_set_buffer_size_per_output(buff_size, output);
+
+ if (buff_size->max_x <= buff_size->min_x ||
+ buff_size->max_y <= buff_size->min_y)
+ return -1;
+
+ buff_size->width = buff_size->max_x - buff_size->min_x;
+ buff_size->height = buff_size->max_y - buff_size->min_y;