Load TTF_Font from assets in android ndk

Hi! I am trying to load TTF_Font from assets like it explained here
http://www.50ply.com/blog/2013/01/19/loading-compressed-android-assets-with-file-pointer/
But I don’t understand, how to convert FILE* to TTF_Font*, in other words - how can I get TTF_Font from assets? Is it possible? Thanks.