[Mp4-tech] Could you help me combine H.264-based FGS and bitstream switching?

[Jake Lee]

Dear Sir/Madam/Miss:
I am very interested in the H.264-based FGS(Fine-Granular-Scalability), which came from MPEG-4 video codec standard, because it gives a flexible enhance-layer-quality increase over a variable channel bandwidth. And I am also very interested in bitstream switching derived from SP/SI frame, an important feature of H.264/AVC video codec standard to identically reconstruct the predictive frame even when different reference frames are used.
Please give me some advice on them.
If you have some c-coding reference software on the combination of H.264-based FGS and bitstream switching, that will be great.
I appreciate that you will send me some source code to help me understand this outstanding concept, in comparison with the results of FGS only or that of bitstream switching only.
I have download H.264/AVC reference software from 
http://iphome.hhi.de/suehring/tml/download/ 
, but there is no guide for the incorporation of FGS into JM(Joint Model) reference software.
Thank you in advance.
Best Regards,
Yours sincerely,
Jake Lee