[Discuss-gnuradio] How to register mods/demods

[Kyle Zhou]

I am writing a custom modulator/demodulator and wanna add them to the 
modulation_utils, such that modulation_utils.type_1_mods() will include 
the custom made mod/demod. However, I could not figure out how to do that.

I notice mods/demods have something like

modulation_utils.add_type_1_mod('dbpsk', dbpsk_mod)
modulation_utils.add_type_1_demod('dbpsk', dbpsk_demod)

to register themselves to the registry.

This is supposed to be run when mod/demod are loaded.

However, I am not quite sure how I can make them be loaded?
I check the benchmark_tx.py and find no code that results in mod/demod 
being loaded.

Help appreciated.
Kyle