Totem plugin development

Hi. I'm not sure if this is the right mailing list for this question,
but I've been thinking about writing an equalizer plugin for Totem. My
question is: are there any public resources concerning plugin
development for Totem? How should I go about doing this? Do I develop
a gstreamer plugin for the main functionality, then a GUI for Totem?

Any help would be appreciated.

Thanks,
nic.