Totem Movie Player Enhacement

[manoj kp kp <manojkp it gmail com>]

hai
My name is manoj.I'm a Sixth semester Information Technology student.
As my academic mini project,my group has selected Totem Movie Player for modifications.
We also dowloaded the Source code of Totem Movie Player 2.24.0
First of all we would like to know from where can we get the documentation of the source  so that we can understand the source and find out where to make the necessary changes.
We,are at present planning to add

• a library for storing the once played files
• video cutter to cut and save video from a specified starting location to ending location
• graphical buttons to do various operations which already exist but doesnot have shortcut on the graphical interface
  

Waiting for a quick reply
Regards 
Manoj