Here are the data structures with brief descriptions:

Camr_hdr
Camr_hdr_bwe
Cipa_head
Cipa_head_ext
Cosmo_ipa_msgb_cb
Cosmo_jibuf	A structure representing a single instance of a jitter buffer
Cosmux_hdr	Osmux protocol header
Cosmux_in_handle	One to handle all existing RTP flows
Cosmux_out_handle	One per OSmux circuit_id, ie
Crtcp_hdr
Crtp_hdr
Crtp_x_hdr