Dsm/dsmx spektrum decoder

Hi, I’m wondering how apm decode dsm dsmx spektrum satellite data. There is several different streams, 11mseg/22mseg, more or less than 7 channel. Can someone point me out to de source code? And is there some explanation of the implementation?

Thanks

All of the rc protocols can be found here:

Thanks!
I can’t understand synchronization proccess. Is there some explanation about it?