[kokomala]

Anything that is is displayed to the totem frame can be obtained with the totem API and events.

Pseudo code.

OnEvent(self, event, ...)
   if ( event == "PLAYER_TOTEM_UPDATE" ) then
      local slot = ...;
      local haveTotem, name, startTime, duration, icon = GetTotemInfo(slot)
  
      -- do stuff

   end
end

This API is also used for Death Knights and Druids.

http://wowprogramming.com/docs/api/GetTotemInfo